ESB-2019.0699.2 - UPDATE [Cisco] Cisco NX-OS: Execute arbitrary code/commands - Existing account 2019-03-20

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                              ESB-2019.0699.2
        Cisco NX-OS Software CLI Command Injection Vulnerabilities
                               20 March 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco NX-OS
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-1613 CVE-2019-1612 CVE-2019-1611
                   CVE-2019-1610 CVE-2019-1609 CVE-2019-1608
                   CVE-2019-1607 CVE-2019-1606 

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1613
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1612
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1609
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1610
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1608
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1606
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1607

Revision History:  March 20 2019: Update to cisco-sa-20190306-nxos-cmdinj-1613
                   March  7 2019: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1613)

Priority:        High

Advisory ID:     cisco-sa-20190306-nxos-cmdinj-1613

First Published: 2019 March 6 16:00 GMT

Last Updated:    2019 March 19 20:55 GMT

Version 1.1:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvj63807 CSCvj65654 CSCvk50903 CSCvk50906

CVE-2019-1613    

CWE-77

CVSS Score:
4.2  AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X

Summary

  o A vulnerability in the CLI of Cisco NX-OS Software could allow an
    authenticated, local attacker to execute arbitrary commands on the
    underlying operating system of an affected device.

    The vulnerability is due to insufficient validation of arguments passed to
    certain CLI commands. An attacker could exploit this vulnerability by
    including malicious input as the argument of an affected command. A
    successful exploit could allow the attacker to execute arbitrary commands
    on the underlying operating system with elevated privileges. An attacker
    would need valid administrator credentials to exploit this vulnerability.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1613

    This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication, which includes 25 Cisco Security
    Advisories that describe 26 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: March 2019 Cisco
    FXOS and NX-OS Software Security Advisory Bundled Publication .

    This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    See Details for more information.

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco products if they are running
    a vulnerable release of Cisco NX-OS Software:

       MDS 9000 Series Multilayer Switches
       Nexus 3000 Series Switches
       Nexus 3500 Platform Switches
       Nexus 3600 Platform Switches
       Nexus 7000 Series Switches
       Nexus 7700 Series Switches
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    For information about which Cisco NX-OS Software releases are vulnerable,
    see the Fixed Software section of this advisory.

    Determining the Cisco NX-OS Software Release

    Administrators can check the release of Cisco NX-OS Software that is
    running on a device by using the show version command in the device CLI.
    The following example shows the output of this command on a device that is
    running Cisco NX-OS Software Release 7.0(3)I5(1) :

        nxos-switch# show version
        Cisco Nexus Operating System (NX-OS) Software
        TAC support: http://www.cisco.com/tac
        Copyright (C) 2002-2016, Cisco and/or its affiliates.
        All rights reserved.
        The copyrights to certain works contained in this software are
        owned by other third parties and used and distributed under their own
        licenses, such as open source.  This software is provided "as is," and
        unless otherwise stated, there is no warranty, express or implied,
        including but not limited to warranties of merchantability and fitness
        for a particular purpose. Certain components of this software are
        licensed under the GNU General Public License (GPL) version 2.0 or
        GNU General Public License (GPL) version 3.0  or the GNU
        Lesser General Public License (LGPL) Version 2.1 or
        Lesser General Public License (LGPL) Version 2.0.
        A copy of each such license is available at
        http://www.opensource.org/licenses/gpl-2.0.php and
        http://opensource.org/licenses/gpl-3.0.html and
        http://www.opensource.org/licenses/lgpl-2.1.php and
        http://www.gnu.org/licenses/old-licenses/library.txt.
        Software
          BIOS: version 07.57
          NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
          BIOS compile time:  06/29/2016
          NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
          NXOS compile time:  8/1/2016 23:00:00 [08/02/2016 00:30:32]
          .
          .
          .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect the following
    Cisco products:

       Firepower 2100 Series Firewalls
       Firepower 4100 Series Next-Generation Firewalls
       Firepower 9300 Security Appliance
       Nexus 1000V Switch for Microsoft Hyper-V
       Nexus 1000V Switch for VMware vSphere
       Nexus 2000 Series Fabric Extenders
       Nexus 5500 Platform Switches
       Nexus 5600 Platform Switches
       Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
        (ACI) mode
       UCS 6200 Series Fabric Interconnects
       UCS 6300 Series Fabric Interconnects
       UCS 6400 Series Fabric Interconnects

Details

  o This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    This table illustrates the affected products for each vulnerability,
    identified by the defect ID and the CVE ID used in the security advisory
    title.


    Security        FP 4100/   N3K/N9K    N3500      N2K/N5K/   MDS /N7K   N3600 /
    Advisory        9300                             N6K                   N9500R
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvh85760 CSCvh85760 N/A        N/A        N/A
    Injection
    Vulnerability
    (CVE-2019-1606)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01416 N/A
    Injection                                                   ^1
    Vulnerability
    (CVE-2019-1607)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01422 N/A
    Injection
    Vulnerability
    (CVE-2019-1608)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj63253 CSCvj63253 N/A        CSCvk51388 CSCvk51387
    Injection
    Vulnerability
    (CVE-2019-1609)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj61991 CSCvj61991 N/A        N/A        N/A
    Injection                  ^2
    Vulnerability
    (CVE-2019-1610)
    Cisco NX-OS and
    FXOS Software
    CLI Command     CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
    Injection
    Vulnerability
    (CVE-2019-1611)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvi42373 CSCvi42373 N/A        N/A        CSCvj12009
    Injection
    Vulnerability
    (CVE-2019-1612)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj65654 CSCvk50906 N/A        CSCvj63807 CSCvk50903
    Injection
    Vulnerability
    (CVE-2019-1613)

    ^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
    MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
    ^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
    Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
    this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades, customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC:
    https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Customers are advised to upgrade to an appropriate release as indicated in
    the applicable table in this section. To help ensure a complete upgrade
    solution, customers should consider that this advisory is part of a bundled
    publication. The following page provides a complete list of bundle
    advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication .

    In the following tables, the left column lists releases of Cisco FXOS
    Software or Cisco NX-OS Software. The center column indicates whether a
    release is affected by the vulnerability described in this advisory and the
    first release that includes the fix for this vulnerability. The right
    column indicates whether a release is affected by all the vulnerabilities
    described in this bundle and which release includes fixes for those
    vulnerabilities.

    Although the releases listed in the right column of each table include
    fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
    Image Signature Verification Vulnerability requires a BIOS upgrade as part
    of the software upgrade. Customers who are upgrading the software for any
    of the following products are advised to refer to this advisory for further
    details about the BIOS upgrade and affected product IDs and BIOS versions:

       Nexus 3000 Series Switches
       Nexus 9000 Series Fabric Switches in ACI mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    MDS 9000 Series Multilayer Switches: CSCvj63807


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    5.2            Not vulnerable       6.2(27)
    6.2            6.2(27)              6.2(27)
    7.3            8.2(3)               8.3(2)
    8.1            8.2(3)               8.3(2)
    8.2            8.2(3)               8.3(2)
    8.3            Not vulnerable       8.3(2)


    Nexus 3000 Series Switches: CSCvj65654


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   7.0(3)I4(9)          7.0(3)I7(6)
    (3)I4
    7.0(3)I4       7.0(3)I4(9)          7.0(3)I7(6)
    7.0(3)I5       7.0(3)I7(6)          7.0(3)I7(6)
    7.0(3)I6       7.0(3)I7(6)          7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(6)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 3500 Platform Switches: CSCvk50906


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 6.0   6.0(2)A8(11)         6.0(2)A8(11)
    (2)A8
    6.0(2)A8       6.0(2)A8(11)         6.0(2)A8(11)
    7.0(3)         7.0(3)I7(6)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 3600 Platform Switches: CSCvk50903


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    7.0(3)F3       7.0(3)F3(5)          7.0(3)F3(5)
    9.2            Not vulnerable       9.2(2)


    Nexus 7000 and 7700 Series Switches: CSCvj63807


    Cisco NX-OS   First Fixed Release   First Fixed Release for All
    Software      for This              Vulnerabilities Described in the Bundle
    Release       Vulnerability         of Advisories
    Prior to 6.2  Not vulnerable        6.2(22)
    6.2           6.2(22)               6.2(22)
    7.2           8.2(3)                8.2(3)
                  Umbrella SMU for
    7.3           CSCvj10178 and        8.2(3)
                  CSCvj63807 ^1
    8.0           8.2(3)                8.2(3)
    8.1           8.2(3)                8.2(3)
    8.2           8.2(3)                8.2(3)
    8.3           Not vulnerable        8.3(2)

    ^ 1 Software maintenance upgrade (SMU) for Nexus 7000 and 7700. The SMU
    filename contains the Cisco bug ID CSCvo56625.

    Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvj65654


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   7.0(3)I4(9)          7.0(3)I4(9)
    (3)I4
    7.0(3)I4       7.0(3)I4(9)          7.0(3)I7(6)
    7.0(3)I5       7.0(3)I7(6)          7.0(3)I7(6)
    7.0(3)I6       7.0(3)I7(6)          7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(6)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 9500 R-Series Line Cards and Fabric Modules and Nexus 3600 Platform
    Switches: CSCvk50903


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    7.0(3)F1       7.0(3)F3(5)          7.0(3)F3(5)
    7.0(3)F2       7.0(3)F3(5)          7.0(3)F3(5)
    7.0(3)F3       7.0(3)F3(5)          7.0(3)F3(5)
    9.2            Not vulnerable       9.2(2)


    Additional Resources

    For help determining the best Cisco NX-OS Software release for a Cisco
    Nexus Switch, administrators can refer to the following Recommended
    Releases documents. If a security advisory recommends a later release,
    Cisco recommends following the advisory guidance.

        Cisco MDS Series Switches
        Cisco Nexus 1000V for VMware Switch
        Cisco Nexus 3000 Series and 3500 Series Switches
        Cisco Nexus 5000 Series Switches
        Cisco Nexus 5500 Platform Switches
        Cisco Nexus 6000 Series Switches
        Cisco Nexus 7000 Series Switches
        Cisco Nexus 9000 Series Switches
        Cisco Nexus 9000 Series ACI-Mode Switches

    For help determining the best Cisco NX-OS Software release for Cisco UCS,
    refer to the Recommended Releases documents in the release notes for the
    device.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
    Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1613

Revision History

  o +---------+---------------------------+----------+--------+---------------+
    | Version |        Description        | Section  | Status |     Date      |
    +---------+---------------------------+----------+--------+---------------+
    |         | Added SMU fix for Nexus   | Fixed    |        |               |
    | 1.1     | 7000 and 7700 for the 7.3 | Software | Final  | 2019-March-19 |
    |         | software release.         |          |        |               |
    +---------+---------------------------+----------+--------+---------------+
    | 1.0     | Initial public release.   | -        | Final  | 2019-March-06 |
    +---------+---------------------------+----------+--------+---------------+

===============================================================================

Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1612)

Priority:        High

Advisory ID:     cisco-sa-20190306-nxos-cmdinj-1612

First Published: 2019 March 6 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvi42373 CSCvj12009

CVE-2019-1612    

CWE-77

CVSS Score:
4.2  AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X

Summary

  o A vulnerability in the CLI of Cisco NX-OS Software could allow an
    authenticated, local attacker to execute arbitrary commands on the
    underlying operating system of an affected device.

    The vulnerability is due to insufficient validation of arguments passed to
    certain CLI commands. An attacker could exploit this vulnerability by
    including malicious input as the argument of an affected command. A
    successful exploit could allow the attacker to execute arbitrary commands
    on the underlying operating system with elevated privileges. An attacker
    would need valid administrator credentials to exploit this vulnerability.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1612

    This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication, which includes 25 Cisco Security
    Advisories that describe 26 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: March 2019 Cisco
    FXOS and NX-OS Software Security Advisory Bundled Publication .

    This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    See Details for more information.

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco products if they are running
    a vulnerable release of Cisco NX-OS Software:

       Nexus 3000 Series Switches
       Nexus 3500 Platform Switches
       Nexus 3600 Platform Switches
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    For information about which Cisco NX-OS Software releases are vulnerable,
    see the Fixed Software section of this advisory.

    Determining the Cisco NX-OS Software Release

    Administrators can check the release of Cisco NX-OS Software that is
    running on a device by using the show version command in the device CLI.
    The following example shows the output of this command on a device that is
    running Cisco NX-OS Software Release 7.0(3)I5(1) :

        nxos-switch# show version
        Cisco Nexus Operating System (NX-OS) Software
        TAC support: http://www.cisco.com/tac
        Copyright (C) 2002-2016, Cisco and/or its affiliates.
        All rights reserved.
        The copyrights to certain works contained in this software are
        owned by other third parties and used and distributed under their own
        licenses, such as open source.  This software is provided "as is," and
        unless otherwise stated, there is no warranty, express or implied,
        including but not limited to warranties of merchantability and fitness
        for a particular purpose. Certain components of this software are
        licensed under the GNU General Public License (GPL) version 2.0 or
        GNU General Public License (GPL) version 3.0  or the GNU
        Lesser General Public License (LGPL) Version 2.1 or
        Lesser General Public License (LGPL) Version 2.0.
        A copy of each such license is available at
        http://www.opensource.org/licenses/gpl-2.0.php and
        http://opensource.org/licenses/gpl-3.0.html and
        http://www.opensource.org/licenses/lgpl-2.1.php and
        http://www.gnu.org/licenses/old-licenses/library.txt.
        Software
          BIOS: version 07.57
          NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
          BIOS compile time:  06/29/2016
          NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
          NXOS compile time:  8/1/2016 23:00:00 [08/02/2016 00:30:32]
          .
          .
          .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect the following
    Cisco products:

       Firepower 2100 Series Firewalls
       Firepower 4100 Series Next-Generation Firewalls
       Firepower 9300 Security Appliance
       MDS 9000 Series Multilayer Switches
       Nexus 1000V Switch for Microsoft Hyper-V
       Nexus 1000V Switch for VMware vSphere
       Nexus 2000 Series Fabric Extenders
       Nexus 5500 Platform Switches
       Nexus 5600 Platform Switches
       Nexus 6000 Series Switches
       Nexus 7000 Series Switches
       Nexus 7700 Series Switches
       Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
        (ACI) mode
       UCS 6200 Series Fabric Interconnects
       UCS 6300 Series Fabric Interconnects
       UCS 6400 Series Fabric Interconnects

Details

  o This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    This table illustrates the affected products for each vulnerability,
    identified by the defect ID and the CVE ID used in the security advisory
    title.


    Security        FP 4100/   N3K/N9K    N3500      N2K/N5K/   MDS /N7K   N3600 /
    Advisory        9300                             N6K                   N9500R
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvh85760 CSCvh85760 N/A        N/A        N/A
    Injection
    Vulnerability
    (CVE-2019-1606)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01416 N/A
    Injection                                                   ^1
    Vulnerability
    (CVE-2019-1607)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01422 N/A
    Injection
    Vulnerability
    (CVE-2019-1608)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj63253 CSCvj63253 N/A        CSCvk51388 CSCvk51387
    Injection
    Vulnerability
    (CVE-2019-1609)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj61991 CSCvj61991 N/A        N/A        N/A
    Injection                  ^2
    Vulnerability
    (CVE-2019-1610)
    Cisco NX-OS and
    FXOS Software
    CLI Command     CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
    Injection
    Vulnerability
    (CVE-2019-1611)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvi42373 CSCvi42373 N/A        N/A        CSCvj12009
    Injection
    Vulnerability
    (CVE-2019-1612)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj65654 CSCvk50906 N/A        CSCvj63807 CSCvk50903
    Injection
    Vulnerability
    (CVE-2019-1613)

    ^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
    MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
    ^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
    Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
    this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades, customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC:
    https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Customers are advised to upgrade to an appropriate release as indicated in
    the applicable table in this section. To help ensure a complete upgrade
    solution, customers should consider that this advisory is part of a bundled
    publication. The following page provides a complete list of bundle
    advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication .

    In the following tables, the left column lists releases of Cisco FXOS
    Software or Cisco NX-OS Software. The center column indicates whether a
    release is affected by the vulnerability described in this advisory and the
    first release that includes the fix for this vulnerability. The right
    column indicates whether a release is affected by all the vulnerabilities
    described in this bundle and which release includes fixes for those
    vulnerabilities.

    Although the releases listed in the right column of each table include
    fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
    Image Signature Verification Vulnerability requires a BIOS upgrade as part
    of the software upgrade. Customers who are upgrading the software for any
    of the following products are advised to refer to this advisory for further
    details about the BIOS upgrade and affected product IDs and BIOS versions:

       Nexus 3000 Series Switches
       Nexus 9000 Series Fabric Switches in ACI mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    Nexus 3000 Series Switches: CSCvi42373


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   7.0(3)I4(9)          7.0(3)I7(6)
    (3)I4
    7.0(3)I4       7.0(3)I4(9)          7.0(3)I7(6)
    7.0(3)I5       7.0(3)I7(4)          7.0(3)I7(6)
    7.0(3)I6       7.0(3)I7(4)          7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(4)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 3500 Platform Switches: CSCvi42373


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 6.0   Not vulnerable       6.0(2)A8(11)
    (2)A8
    6.0(2)A8       Not vulnerable       6.0(2)A8(11)
    7.0(3)         7.0(3)I7(4)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 3600 Platform Switches: CSCvj12009


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    7.0(3)F3       7.0(3)F3(3c) ^1      7.0(3)F3(5)
    9.2            Not vulnerable       9.2(2)

    ^ 1 This vulnerability is not fixed in 7.0(3)F3(4) but is fixed in 7.0(3)F3
    (5).

    Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvi42373


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   7.0(3)I4(9)          7.0(3)I4(9)
    (3)I4
    7.0(3)I4       7.0(3)I4(9)          7.0(3)I7(6)
    7.0(3)I5       7.0(3)I7(4)          7.0(3)I7(6)
    7.0(3)I6       7.0(3)I7(4)          7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(4)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 9500 R-Series Line Cards and Fabric Modules: CSCvj12009


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    7.0(3)F1       7.0(3)F3(3c) ^1      7.0(3)F3(5)
    7.0(3)F2       7.0(3)F3(3c) ^1      7.0(3)F3(5)
    7.0(3)F3       7.0(3)F3(3c) ^1      7.0(3)F3(5)
    9.2            Not vulnerable       9.2(2)

    ^ 1 This vulnerability is not fixed in 7.0(3)F3(4) but is fixed in 7.0(3)F3
    (5).

    Additional Resources

    For help determining the best Cisco NX-OS Software release for a Cisco
    Nexus Switch, administrators can refer to the following Recommended
    Releases documents. If a security advisory recommends a later release,
    Cisco recommends following the advisory guidance.

        Cisco MDS Series Switches
        Cisco Nexus 1000V for VMware Switch
        Cisco Nexus 3000 Series and 3500 Series Switches
        Cisco Nexus 5000 Series Switches
        Cisco Nexus 5500 Platform Switches
        Cisco Nexus 6000 Series Switches
        Cisco Nexus 7000 Series Switches
        Cisco Nexus 9000 Series Switches
        Cisco Nexus 9000 Series ACI-Mode Switches

    For help determining the best Cisco NX-OS Software release for Cisco UCS,
    refer to the Recommended Releases documents in the release notes for the
    device.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
    Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1612

Revision History

  o +---------+--------------------------+---------+--------+----------------+
    | Version |       Description        | Section | Status |      Date      |
    +---------+--------------------------+---------+--------+----------------+
    | 1.0     | Initial public release.  | -       | Final  | 2019-March-06  |
    +---------+--------------------------+---------+--------+----------------+

===============================================================================

Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1609)

Priority:        High

Advisory ID:     cisco-sa-20190306-nxos-cmdinj-1609

First Published: 2019 March 6 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvj63253 CSCvk51387 CSCvk51388

CVE-2019-1609    

CWE-77

CVSS Score:
4.2  AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X

Summary

  o A vulnerability in the CLI of Cisco NX-OS Software could allow an
    authenticated, local attacker to execute arbitrary commands on the
    underlying operating system of an affected device.

    The vulnerability is due to insufficient validation of arguments passed to
    certain CLI commands. An attacker could exploit this vulnerability by
    including malicious input as the argument of an affected command. A
    successful exploit could allow the attacker to execute arbitrary commands
    on the underlying operating system with elevated privileges. An attacker
    would need valid administrator credentials to exploit this vulnerability.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1609

    This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication, which includes 25 Cisco Security
    Advisories that describe 26 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: March 2019 Cisco
    FXOS and NX-OS Software Security Advisory Bundled Publication .

    This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    See Details for more information.

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco products if they are running
    a vulnerable release of Cisco NX-OS Software:

       MDS 9000 Series Multilayer Switches
       Nexus 3000 Series Switches
       Nexus 3500 Platform Switches
       Nexus 3600 Platform Switches
       Nexus 7000 Series Switches
       Nexus 7700 Series Switches
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    For information about which Cisco NX-OS Software releases are vulnerable,
    see the Fixed Software section of this advisory.

    Determining the Cisco NX-OS Software Release

    Administrators can check the release of Cisco NX-OS Software that is
    running on a device by using the show version command in the device CLI.
    The following example shows the output of this command on a device that is
    running Cisco NX-OS Software Release 7.0(3)I5(1) :

        nxos-switch# show version
        Cisco Nexus Operating System (NX-OS) Software
        TAC support: http://www.cisco.com/tac
        Copyright (C) 2002-2016, Cisco and/or its affiliates.
        All rights reserved.
        The copyrights to certain works contained in this software are
        owned by other third parties and used and distributed under their own
        licenses, such as open source.  This software is provided "as is," and
        unless otherwise stated, there is no warranty, express or implied,
        including but not limited to warranties of merchantability and fitness
        for a particular purpose. Certain components of this software are
        licensed under the GNU General Public License (GPL) version 2.0 or
        GNU General Public License (GPL) version 3.0  or the GNU
        Lesser General Public License (LGPL) Version 2.1 or
        Lesser General Public License (LGPL) Version 2.0.
        A copy of each such license is available at
        http://www.opensource.org/licenses/gpl-2.0.php and
        http://opensource.org/licenses/gpl-3.0.html and
        http://www.opensource.org/licenses/lgpl-2.1.php and
        http://www.gnu.org/licenses/old-licenses/library.txt.
        Software
          BIOS: version 07.57
          NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
          BIOS compile time:  06/29/2016
          NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
          NXOS compile time:  8/1/2016 23:00:00 [08/02/2016 00:30:32]
          .
          .
          .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect the following
    Cisco products:

       Firepower 2100 Series Firewalls
       Firepower 4100 Series Next-Generation Firewalls
       Firepower 9300 Security Appliance
       Nexus 1000V Switch for Microsoft Hyper-V
       Nexus 1000V Switch for VMware vSphere
       Nexus 2000 Series Fabric Extenders
       Nexus 5500 Platform Switches
       Nexus 5600 Platform Switches
       Nexus 6000 Series Switches
       Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
        (ACI) mode
       UCS 6200 Series Fabric Interconnects
       UCS 6300 Series Fabric Interconnects
       UCS 6400 Series Fabric Interconnects

Details

  o This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    This table illustrates the affected products for each vulnerability,
    identified by the defect ID and the CVE ID used in the security advisory
    title.


    Security        FP 4100/   N3K/N9K    N3500      N2K/N5K/   MDS /N7K   N3600 /
    Advisory        9300                             N6K                   N9500R
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvh85760 CSCvh85760 N/A        N/A        N/A
    Injection
    Vulnerability
    (CVE-2019-1606)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01416 N/A
    Injection                                                   ^1
    Vulnerability
    (CVE-2019-1607)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01422 N/A
    Injection
    Vulnerability
    (CVE-2019-1608)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj63253 CSCvj63253 N/A        CSCvk51388 CSCvk51387
    Injection
    Vulnerability
    (CVE-2019-1609)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj61991 CSCvj61991 N/A        N/A        N/A
    Injection                  ^2
    Vulnerability
    (CVE-2019-1610)
    Cisco NX-OS and
    FXOS Software
    CLI Command     CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
    Injection
    Vulnerability
    (CVE-2019-1611)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvi42373 CSCvi42373 N/A        N/A        CSCvj12009
    Injection
    Vulnerability
    (CVE-2019-1612)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj65654 CSCvk50906 N/A        CSCvj63807 CSCvk50903
    Injection
    Vulnerability
    (CVE-2019-1613)

    ^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
    MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
    ^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
    Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
    this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades, customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC:
    https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Customers are advised to upgrade to an appropriate release as indicated in
    the applicable table in this section. To help ensure a complete upgrade
    solution, customers should consider that this advisory is part of a bundled
    publication. The following page provides a complete list of bundle
    advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication .

    In the following tables, the left column lists releases of Cisco FXOS
    Software or Cisco NX-OS Software. The center column indicates whether a
    release is affected by the vulnerability described in this advisory and the
    first release that includes the fix for this vulnerability. The right
    column indicates whether a release is affected by all the vulnerabilities
    described in this bundle and which release includes fixes for those
    vulnerabilities.

    Although the releases listed in the right column of each table include
    fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
    Image Signature Verification Vulnerability requires a BIOS upgrade as part
    of the software upgrade. Customers who are upgrading the software for any
    of the following products are advised to refer to this advisory for further
    details about the BIOS upgrade and affected product IDs and BIOS versions:

       Nexus 3000 Series Switches
       Nexus 9000 Series Fabric Switches in ACI mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    MDS 9000 Series Multilayer Switches: CSCvk51388


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    5.2            6.2(27)              6.2(27)
    6.2            6.2(27)              6.2(27)
    7.3            8.1(1b)              8.3(2)
    8.1            8.1(1b)              8.3(2)
    8.2            8.3(2)               8.3(2)
    8.3            8.3(2)               8.3(2)


    Nexus 3000 Series Switches: CSCvj63253


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   7.0(3)I4(9)          7.0(3)I7(6)
    (3)I4
    7.0(3)I4       7.0(3)I4(9)          7.0(3)I7(6)
    7.0(3)I5       7.0(3)I7(6)          7.0(3)I7(6)
    7.0(3)I6       7.0(3)I7(6)          7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(6)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 3500 Platform Switches: CSCvj63253


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 6.0   Not vulnerable       6.0(2)A8(11)
    (2)A8
    6.0(2)A8       Not vulnerable       6.0(2)A8(11)
    7.0(3)         7.0(3)I7(6)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 3600 Platform Switches: CSCvk51387


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    7.0(3)F3       7.0(3)F3(5)          7.0(3)F3(5)
    9.2            Not vulnerable       9.2(2)


    Nexus 7000 and 7700 Series Switches: CSCvk51388


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 6.2   6.2(22)              6.2(22)
    6.2            6.2(22)              6.2(22)
    7.2            7.3(3)D1(1)          8.2(3)
    7.3            7.3(3)D1(1)          8.2(3)
    8.0            8.2(3)               8.2(3)
    8.1            8.2(3)               8.2(3)
    8.2            8.2(3)               8.2(3)
    8.3            8.3(2)               8.3(2)


    Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvj63253


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   7.0(3)I4(9)          7.0(3)I4(9)
    (3)I4
    7.0(3)I4       7.0(3)I4(9)          7.0(3)I7(6)
    7.0(3)I5       7.0(3)I7(6)          7.0(3)I7(6)
    7.0(3)I6       7.0(3)I7(6)          7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(6)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 9500 R-Series Line Cards and Fabric Modules: CSCvk51387


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    7.0(3)F1       7.0(3)F3(5)          7.0(3)F3(5)
    7.0(3)F2       7.0(3)F3(5)          7.0(3)F3(5)
    7.0(3)F3       7.0(3)F3(5)          7.0(3)F3(5)
    9.2            Not vulnerable       9.2(2)


    Additional Resources

    For help determining the best Cisco NX-OS Software release for a Cisco
    Nexus Switch, administrators can refer to the following Recommended
    Releases documents. If a security advisory recommends a later release,
    Cisco recommends following the advisory guidance.

        Cisco MDS Series Switches
        Cisco Nexus 1000V for VMware Switch
        Cisco Nexus 3000 Series and 3500 Series Switches
        Cisco Nexus 5000 Series Switches
        Cisco Nexus 5500 Platform Switches
        Cisco Nexus 6000 Series Switches
        Cisco Nexus 7000 Series Switches
        Cisco Nexus 9000 Series Switches
        Cisco Nexus 9000 Series ACI-Mode Switches

    For help determining the best Cisco NX-OS Software release for Cisco UCS,
    refer to the Recommended Releases documents in the release notes for the
    device.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
    Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1609

Revision History

  o +---------+--------------------------+---------+--------+----------------+
    | Version |       Description        | Section | Status |      Date      |
    +---------+--------------------------+---------+--------+----------------+
    | 1.0     | Initial public release.  | -       | Final  | 2019-March-06  |
    +---------+--------------------------+---------+--------+----------------+

===============================================================================

Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1610)

Priority:        High

Advisory ID:     cisco-sa-20190306-nxos-cmdinj-1610

First Published: 2019 March 6 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvj61991

CVE-2019-1610    

CWE-77

CVSS Score:
4.2  AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X

Summary

  o A vulnerability in the CLI of Cisco NX-OS Software could allow an
    authenticated, local attacker to execute arbitrary commands on the
    underlying operating system of an affected device.

    The vulnerability is due to insufficient validation of arguments passed to
    certain CLI commands. An attacker could exploit this vulnerability by
    including malicious input as the argument of an affected command. A
    successful exploit could allow the attacker to execute arbitrary commands
    on the underlying operating system with elevated privileges. An attacker
    would need valid administrator credentials to exploit this vulnerability.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1610

    This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication, which includes 25 Cisco Security
    Advisories that describe 26 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: March 2019 Cisco
    FXOS and NX-OS Software Security Advisory Bundled Publication .

    This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    See Details for more information.

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco products if they are running
    a vulnerable release of Cisco NX-OS Software:

       Nexus 3000 Series Switches
       Nexus 3500 Platform Switches

    For information about which Cisco NX-OS Software releases are vulnerable,
    see the Fixed Software section of this advisory.

    Determining the Cisco NX-OS Software Release

    Administrators can check the release of Cisco NX-OS Software that is
    running on a device by using the show version command in the device CLI.
    The following example shows the output of this command on a device that is
    running Cisco NX-OS Software Release 7.0(3)I5(1) :

        nxos-switch# show version
        Cisco Nexus Operating System (NX-OS) Software
        TAC support: http://www.cisco.com/tac
        Copyright (C) 2002-2016, Cisco and/or its affiliates.
        All rights reserved.
        The copyrights to certain works contained in this software are
        owned by other third parties and used and distributed under their own
        licenses, such as open source.  This software is provided "as is," and
        unless otherwise stated, there is no warranty, express or implied,
        including but not limited to warranties of merchantability and fitness
        for a particular purpose. Certain components of this software are
        licensed under the GNU General Public License (GPL) version 2.0 or
        GNU General Public License (GPL) version 3.0  or the GNU
        Lesser General Public License (LGPL) Version 2.1 or
        Lesser General Public License (LGPL) Version 2.0.
        A copy of each such license is available at
        http://www.opensource.org/licenses/gpl-2.0.php and
        http://opensource.org/licenses/gpl-3.0.html and
        http://www.opensource.org/licenses/lgpl-2.1.php and
        http://www.gnu.org/licenses/old-licenses/library.txt.
        Software
          BIOS: version 07.57
          NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
          BIOS compile time:  06/29/2016
          NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
          NXOS compile time:  8/1/2016 23:00:00 [08/02/2016 00:30:32]
          .
          .
          .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect the following
    Cisco products:

       Firepower 2100 Series Firewalls
       Firepower 4100 Series Next-Generation Firewalls
       Firepower 9300 Security Appliance
       MDS 9000 Series Multilayer Switches
       Nexus 1000V Switch for Microsoft Hyper-V
       Nexus 1000V Switch for VMware vSphere
       Nexus 2000 Series Fabric Extenders
       Nexus 3600 Platform Switches
       Nexus 5500 Platform Switches
       Nexus 5600 Platform Switches
       Nexus 6000 Series Switches
       Nexus 7000 Series Switches
       Nexus 7700 Series Switches
       Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
        (ACI) mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules
       UCS 6200 Series Fabric Interconnects
       UCS 6300 Series Fabric Interconnects
       UCS 6400 Series Fabric Interconnects

Details

  o This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    This table illustrates the affected products for each vulnerability,
    identified by the defect ID and the CVE ID used in the security advisory
    title.


    Security        FP 4100/   N3K/N9K    N3500      N2K/N5K/   MDS /N7K   N3600 /
    Advisory        9300                             N6K                   N9500R
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvh85760 CSCvh85760 N/A        N/A        N/A
    Injection
    Vulnerability
    (CVE-2019-1606)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01416 N/A
    Injection                                                   ^1
    Vulnerability
    (CVE-2019-1607)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01422 N/A
    Injection
    Vulnerability
    (CVE-2019-1608)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj63253 CSCvj63253 N/A        CSCvk51388 CSCvk51387
    Injection
    Vulnerability
    (CVE-2019-1609)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj61991 CSCvj61991 N/A        N/A        N/A
    Injection                  ^2
    Vulnerability
    (CVE-2019-1610)
    Cisco NX-OS and
    FXOS Software
    CLI Command     CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
    Injection
    Vulnerability
    (CVE-2019-1611)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvi42373 CSCvi42373 N/A        N/A        CSCvj12009
    Injection
    Vulnerability
    (CVE-2019-1612)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj65654 CSCvk50906 N/A        CSCvj63807 CSCvk50903
    Injection
    Vulnerability
    (CVE-2019-1613)

    ^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
    MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
    ^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
    Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
    this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades, customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC:
    https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Customers are advised to upgrade to an appropriate release as indicated in
    the applicable table in this section. To help ensure a complete upgrade
    solution, customers should consider that this advisory is part of a bundled
    publication. The following page provides a complete list of bundle
    advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication .

    In the following tables, the left column lists releases of Cisco FXOS
    Software or Cisco NX-OS Software. The center column indicates whether a
    release is affected by the vulnerability described in this advisory and the
    first release that includes the fix for this vulnerability. The right
    column indicates whether a release is affected by all the vulnerabilities
    described in this bundle and which release includes fixes for those
    vulnerabilities.

    Although the releases listed in the right column of each table include
    fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
    Image Signature Verification Vulnerability requires a BIOS upgrade as part
    of the software upgrade. Customers who are upgrading the software for any
    of the following products are advised to refer to this advisory for further
    details about the BIOS upgrade and affected product IDs and BIOS versions:

       Nexus 3000 Series Switches
       Nexus 9000 Series Fabric Switches in ACI mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    Nexus 3000 Series Switches: CSCvj61991


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   7.0(3)I7(4)          7.0(3)I7(6)
    (3)I4
    7.0(3)I4       7.0(3)I7(4)          7.0(3)I7(6)
    7.0(3)I5       7.0(3)I7(4)          7.0(3)I7(6)
    7.0(3)I6       7.0(3)I7(4)          7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(4)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 3500 Platform Switches: CSCvj61991


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 6.0   Not vulnerable       6.0(2)A8(11)
    (2)A8
    6.0(2)A8       Not vulnerable       6.0(2)A8(11)
    7.0(3)         7.0(3)I7(4)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Additional Resources

    For help determining the best Cisco NX-OS Software release for a Cisco
    Nexus Switch, administrators can refer to the following Recommended
    Releases documents. If a security advisory recommends a later release,
    Cisco recommends following the advisory guidance.

        Cisco MDS Series Switches
        Cisco Nexus 1000V for VMware Switch
        Cisco Nexus 3000 Series and 3500 Series Switches
        Cisco Nexus 5000 Series Switches
        Cisco Nexus 5500 Platform Switches
        Cisco Nexus 6000 Series Switches
        Cisco Nexus 7000 Series Switches
        Cisco Nexus 9000 Series Switches
        Cisco Nexus 9000 Series ACI-Mode Switches

    For help determining the best Cisco NX-OS Software release for Cisco UCS,
    refer to the Recommended Releases documents in the release notes for the
    device.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
    Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1610

Revision History

  o +---------+--------------------------+---------+--------+----------------+
    | Version |       Description        | Section | Status |      Date      |
    +---------+--------------------------+---------+--------+----------------+
    | 1.0     | Initial public release.  | -       | Final  | 2019-March-06  |
    +---------+--------------------------+---------+--------+----------------+

===============================================================================

Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1608)

Priority:        High

Advisory ID:     cisco-sa-20190306-nxos-cmdinj-1608

First Published: 2019 March 6 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvi01422

CVE-2019-1608    

CWE-77

CVSS Score:
4.2  AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X

Summary

  o A vulnerability in the CLI of Cisco NX-OS Software could allow an
    authenticated, local attacker to execute arbitrary commands on the
    underlying operating system of an affected device.

    The vulnerability is due to insufficient validation of arguments passed to
    certain CLI commands. An attacker could exploit this vulnerability by
    including malicious input as the argument of an affected command. A
    successful exploit could allow the attacker to execute arbitrary commands
    on the underlying operating system with elevated privileges. An attacker
    would need valid administrator credentials to exploit this vulnerability.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1608

    This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication, which includes 25 Cisco Security
    Advisories that describe 26 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: March 2019 Cisco
    FXOS and NX-OS Software Security Advisory Bundled Publication .

    This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    See Details for more information.

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco products if they are running
    a vulnerable release of Cisco NX-OS Software:

       MDS 9000 Series Multilayer Switches
       Nexus 7000 Series Switches
       Nexus 7700 Series Switches

    For information about which Cisco NX-OS Software releases are vulnerable,
    see the Fixed Software section of this advisory.

    Determining the Cisco NX-OS Software Release

    Administrators can check the release of Cisco NX-OS Software that is
    running on a device by using the show version command in the device CLI.
    The following example shows the output of this command on a device that is
    running Cisco NX-OS Software Release 7.0(3)I5(1) :

        nxos-switch# show version
        Cisco Nexus Operating System (NX-OS) Software
        TAC support: http://www.cisco.com/tac
        Copyright (C) 2002-2016, Cisco and/or its affiliates.
        All rights reserved.
        The copyrights to certain works contained in this software are
        owned by other third parties and used and distributed under their own
        licenses, such as open source.  This software is provided "as is," and
        unless otherwise stated, there is no warranty, express or implied,
        including but not limited to warranties of merchantability and fitness
        for a particular purpose. Certain components of this software are
        licensed under the GNU General Public License (GPL) version 2.0 or
        GNU General Public License (GPL) version 3.0  or the GNU
        Lesser General Public License (LGPL) Version 2.1 or
        Lesser General Public License (LGPL) Version 2.0.
        A copy of each such license is available at
        http://www.opensource.org/licenses/gpl-2.0.php and
        http://opensource.org/licenses/gpl-3.0.html and
        http://www.opensource.org/licenses/lgpl-2.1.php and
        http://www.gnu.org/licenses/old-licenses/library.txt.
        Software
          BIOS: version 07.57
          NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
          BIOS compile time:  06/29/2016
          NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
          NXOS compile time:  8/1/2016 23:00:00 [08/02/2016 00:30:32]
          .
          .
          .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect the following
    Cisco products:

       Firepower 2100 Series Firewalls
       Firepower 4100 Series Next-Generation Firewalls
       Firepower 9300 Security Appliance
       Nexus 1000V Switch for Microsoft Hyper-V
       Nexus 1000V Switch for VMware vSphere
       Nexus 2000 Series Fabric Extenders
       Nexus 3000 Series Switches
       Nexus 3500 Platform Switches
       Nexus 3600 Platform Switches
       Nexus 5500 Platform Switches
       Nexus 5600 Platform Switches
       Nexus 6000 Series Switches
       Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
        (ACI) mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules
       UCS 6200 Series Fabric Interconnects
       UCS 6300 Series Fabric Interconnects
       UCS 6400 Series Fabric Interconnects

Details

  o This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    This table illustrates the affected products for each vulnerability,
    identified by the defect ID and the CVE ID used in the security advisory
    title.


    Security        FP 4100/   N3K/N9K    N3500      N2K/N5K/   MDS /N7K   N3600 /
    Advisory        9300                             N6K                   N9500R
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvh85760 CSCvh85760 N/A        N/A        N/A
    Injection
    Vulnerability
    (CVE-2019-1606)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01416 N/A
    Injection                                                   ^1
    Vulnerability
    (CVE-2019-1607)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01422 N/A
    Injection
    Vulnerability
    (CVE-2019-1608)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj63253 CSCvj63253 N/A        CSCvk51388 CSCvk51387
    Injection
    Vulnerability
    (CVE-2019-1609)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj61991 CSCvj61991 N/A        N/A        N/A
    Injection                  ^2
    Vulnerability
    (CVE-2019-1610)
    Cisco NX-OS and
    FXOS Software
    CLI Command     CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
    Injection
    Vulnerability
    (CVE-2019-1611)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvi42373 CSCvi42373 N/A        N/A        CSCvj12009
    Injection
    Vulnerability
    (CVE-2019-1612)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj65654 CSCvk50906 N/A        CSCvj63807 CSCvk50903
    Injection
    Vulnerability
    (CVE-2019-1613)

    ^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
    MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
    ^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
    Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
    this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades, customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC:
    https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Customers are advised to upgrade to an appropriate release as indicated in
    the applicable table in this section. To help ensure a complete upgrade
    solution, customers should consider that this advisory is part of a bundled
    publication. The following page provides a complete list of bundle
    advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication .

    In the following tables, the left column lists releases of Cisco FXOS
    Software or Cisco NX-OS Software. The center column indicates whether a
    release is affected by the vulnerability described in this advisory and the
    first release that includes the fix for this vulnerability. The right
    column indicates whether a release is affected by all the vulnerabilities
    described in this bundle and which release includes fixes for those
    vulnerabilities.

    Although the releases listed in the right column of each table include
    fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
    Image Signature Verification Vulnerability requires a BIOS upgrade as part
    of the software upgrade. Customers who are upgrading the software for any
    of the following products are advised to refer to this advisory for further
    details about the BIOS upgrade and affected product IDs and BIOS versions:

       Nexus 3000 Series Switches
       Nexus 9000 Series Fabric Switches in ACI mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    MDS 9000 Series Multilayer Switches: CSCvi01422


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    5.2            6.2(27)              6.2(27)
    6.2            6.2(27)              6.2(27)
    7.3            8.1(1b)              8.3(2)
    8.1            8.1(1b)              8.3(2)
    8.2            8.3(1)               8.3(2)
    8.3            Not vulnerable       8.3(2)


    Nexus 7000 and 7700 Series Switches: CSCvi01422


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 6.2   6.2(22)              6.2(22)
    6.2            6.2(22)              6.2(22)
    7.2            7.3(3)D1(1)          8.2(3)
    7.3            7.3(3)D1(1)          8.2(3)
    8.0            8.2(3)               8.2(3)
    8.1            8.2(3)               8.2(3)
    8.2            8.2(3)               8.2(3)
    8.3            Not vulnerable       8.3(2)


    Additional Resources

    For help determining the best Cisco NX-OS Software release for a Cisco
    Nexus Switch, administrators can refer to the following Recommended
    Releases documents. If a security advisory recommends a later release,
    Cisco recommends following the advisory guidance.

        Cisco MDS Series Switches
        Cisco Nexus 1000V for VMware Switch
        Cisco Nexus 3000 Series and 3500 Series Switches
        Cisco Nexus 5000 Series Switches
        Cisco Nexus 5500 Platform Switches
        Cisco Nexus 6000 Series Switches
        Cisco Nexus 7000 Series Switches
        Cisco Nexus 9000 Series Switches
        Cisco Nexus 9000 Series ACI-Mode Switches

    For help determining the best Cisco NX-OS Software release for Cisco UCS,
    refer to the Recommended Releases documents in the release notes for the
    device.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
    Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1608

Revision History

  o +---------+--------------------------+---------+--------+----------------+
    | Version |       Description        | Section | Status |      Date      |
    +---------+--------------------------+---------+--------+----------------+
    | 1.0     | Initial public release.  | -       | Final  | 2019-March-06  |
    +---------+--------------------------+---------+--------+----------------+

===============================================================================

Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1606)

Priority:        High

Advisory ID:     cisco-sa-20190306-nxos-cmdinj-1606

First Published: 2019 March 6 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvh85760

CVE-2019-1606    

CWE-77

CVSS Score:
5.3  AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X

Summary

  o A vulnerability in the CLI of Cisco NX-OS Software could allow an
    authenticated, local attacker to execute arbitrary commands on the
    underlying operating system of an affected device.

    The vulnerability is due to insufficient validation of arguments passed to
    certain CLI commands. An attacker could exploit this vulnerability by
    including malicious input as the argument of an affected command. A
    successful exploit could allow the attacker to execute arbitrary commands
    on the underlying operating system with elevated privileges. An attacker
    would need valid user credentials to exploit this vulnerability.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1606

    This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication, which includes 25 Cisco Security
    Advisories that describe 26 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: March 2019 Cisco
    FXOS and NX-OS Software Security Advisory Bundled Publication .

    This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    See Details for more information.

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco products if they are running
    a vulnerable release of Cisco NX-OS Software:

       Nexus 3000 Series Switches
       Nexus 3500 Platform Switches
       Nexus 9000 Series Switches in standalone NX-OS mode

    For information about which Cisco NX-OS Software releases are vulnerable,
    see the Fixed Software section of this advisory.

    Determining the Cisco NX-OS Software Release

    Administrators can check the release of Cisco NX-OS Software that is
    running on a device by using the show version command in the device CLI.
    The following example shows the output of this command on a device that is
    running Cisco NX-OS Software Release 7.0(3)I5(1) :

        nxos-switch# show version
        Cisco Nexus Operating System (NX-OS) Software
        TAC support: http://www.cisco.com/tac
        Copyright (C) 2002-2016, Cisco and/or its affiliates.
        All rights reserved.
        The copyrights to certain works contained in this software are
        owned by other third parties and used and distributed under their own
        licenses, such as open source.  This software is provided "as is," and
        unless otherwise stated, there is no warranty, express or implied,
        including but not limited to warranties of merchantability and fitness
        for a particular purpose. Certain components of this software are
        licensed under the GNU General Public License (GPL) version 2.0 or
        GNU General Public License (GPL) version 3.0  or the GNU
        Lesser General Public License (LGPL) Version 2.1 or
        Lesser General Public License (LGPL) Version 2.0.
        A copy of each such license is available at
        http://www.opensource.org/licenses/gpl-2.0.php and
        http://opensource.org/licenses/gpl-3.0.html and
        http://www.opensource.org/licenses/lgpl-2.1.php and
        http://www.gnu.org/licenses/old-licenses/library.txt.
        Software
          BIOS: version 07.57
          NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
          BIOS compile time:  06/29/2016
          NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
          NXOS compile time:  8/1/2016 23:00:00 [08/02/2016 00:30:32]
          .
          .
          .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect the following
    Cisco products:

       Firepower 2100 Series Firewalls
       Firepower 4100 Series Next-Generation Firewalls
       Firepower 9300 Security Appliance
       MDS 9000 Series Multilayer Switches
       Nexus 1000V Switch for Microsoft Hyper-V
       Nexus 1000V Switch for VMware vSphere
       Nexus 2000 Series Fabric Extenders
       Nexus 3600 Platform Switches
       Nexus 5500 Platform Switches
       Nexus 5600 Platform Switches
       Nexus 6000 Series Switches
       Nexus 7000 Series Switches
       Nexus 7700 Series Switches
       Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
        (ACI) mode
       Nexus 9500 R-Series Line Cards and Fabric Modules
       UCS 6200 Series Fabric Interconnects
       UCS 6300 Series Fabric Interconnects
       UCS 6400 Series Fabric Interconnects

Details

  o This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    This table illustrates the affected products for each vulnerability,
    identified by the defect ID and the CVE ID used in the security advisory
    title.


    Security        FP 4100/   N3K/N9K    N3500      N2K/N5K/   MDS /N7K   N3600 /
    Advisory        9300                             N6K                   N9500R
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvh85760 CSCvh85760 N/A        N/A        N/A
    Injection
    Vulnerability
    (CVE-2019-1606)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01416 N/A
    Injection                                                   ^1
    Vulnerability
    (CVE-2019-1607)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01422 N/A
    Injection
    Vulnerability
    (CVE-2019-1608)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj63253 CSCvj63253 N/A        CSCvk51388 CSCvk51387
    Injection
    Vulnerability
    (CVE-2019-1609)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj61991 CSCvj61991 N/A        N/A        N/A
    Injection                  ^2
    Vulnerability
    (CVE-2019-1610)
    Cisco NX-OS and
    FXOS Software
    CLI Command     CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
    Injection
    Vulnerability
    (CVE-2019-1611)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvi42373 CSCvi42373 N/A        N/A        CSCvj12009
    Injection
    Vulnerability
    (CVE-2019-1612)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj65654 CSCvk50906 N/A        CSCvj63807 CSCvk50903
    Injection
    Vulnerability
    (CVE-2019-1613)

    ^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
    MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
    ^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
    Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
    this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades, customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC:
    https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Customers are advised to upgrade to an appropriate release as indicated in
    the applicable table in this section. To help ensure a complete upgrade
    solution, customers should consider that this advisory is part of a bundled
    publication. The following page provides a complete list of bundle
    advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication .

    In the following tables, the left column lists releases of Cisco FXOS
    Software or Cisco NX-OS Software. The center column indicates whether a
    release is affected by the vulnerability described in this advisory and the
    first release that includes the fix for this vulnerability. The right
    column indicates whether a release is affected by all the vulnerabilities
    described in this bundle and which release includes fixes for those
    vulnerabilities.

    Although the releases listed in the right column of each table include
    fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
    Image Signature Verification Vulnerability requires a BIOS upgrade as part
    of the software upgrade. Customers who are upgrading the software for any
    of the following products are advised to refer to this advisory for further
    details about the BIOS upgrade and affected product IDs and BIOS versions:

       Nexus 3000 Series Switches
       Nexus 9000 Series Fabric Switches in ACI mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    Nexus 3000 Series Switches: CSCvh85760


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   Not vulnerable       7.0(3)I7(6)
    (3)I4
    7.0(3)I4       Not vulnerable       7.0(3)I7(6)
    7.0(3)I5       Not vulnerable       7.0(3)I7(6)
    7.0(3)I6       Not vulnerable       7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(4)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 3500 Platform Switches: CSCvh85760


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 6.0   Not vulnerable       6.0(2)A8(11)
    (2)A8
    6.0(2)A8       Not vulnerable       6.0(2)A8(11)
    7.0(3)         7.0(3)I7(4)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvh85760


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 7.0   Not vulnerable       7.0(3)I4(9)
    (3)I4
    7.0(3)I4       Not vulnerable       7.0(3)I7(6)
    7.0(3)I5       Not vulnerable       7.0(3)I7(6)
    7.0(3)I6       Not vulnerable       7.0(3)I7(6)
    7.0(3)I7       7.0(3)I7(4)          7.0(3)I7(6)
    9.2            Not vulnerable       9.2(2)


    Additional Resources

    For help determining the best Cisco NX-OS Software release for a Cisco
    Nexus Switch, administrators can refer to the following Recommended
    Releases documents. If a security advisory recommends a later release,
    Cisco recommends following the advisory guidance.

        Cisco MDS Series Switches
        Cisco Nexus 1000V for VMware Switch
        Cisco Nexus 3000 Series and 3500 Series Switches
        Cisco Nexus 5000 Series Switches
        Cisco Nexus 5500 Platform Switches
        Cisco Nexus 6000 Series Switches
        Cisco Nexus 7000 Series Switches
        Cisco Nexus 9000 Series Switches
        Cisco Nexus 9000 Series ACI-Mode Switches

    For help determining the best Cisco NX-OS Software release for Cisco UCS,
    refer to the Recommended Releases documents in the release notes for the
    device.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
    Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1606

Revision History

  o +---------+--------------------------+---------+--------+----------------+
    | Version |       Description        | Section | Status |      Date      |
    +---------+--------------------------+---------+--------+----------------+
    | 1.0     | Initial public release.  | -       | Final  | 2019-March-06  |
    +---------+--------------------------+---------+--------+----------------+

===============================================================================

Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1607)

Priority:        High

Advisory ID:     cisco-sa-20190306-nxos-cmdinj-1607

First Published: 2019 March 6 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvi01416

CVE-2019-1607    

CWE-77

CVSS Score:
4.2  AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X

Summary

  o A vulnerability in the CLI of Cisco NX-OS Software could allow an
    authenticated, local attacker to execute arbitrary commands on the
    underlying operating system of an affected device.

    The vulnerability is due to insufficient validation of arguments passed to
    certain CLI commands. An attacker could exploit this vulnerability by
    including malicious input as the argument of an affected command. A
    successful exploit could allow the attacker to execute arbitrary commands
    on the underlying operating system with elevated privileges. An attacker
    would need valid administrator credentials to exploit this vulnerability.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1607

    This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication, which includes 25 Cisco Security
    Advisories that describe 26 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: March 2019 Cisco
    FXOS and NX-OS Software Security Advisory Bundled Publication .

    This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    See Details for more information.

Affected Products

  o Vulnerable Products

    This vulnerability affects the following Cisco products if they are running
    a vulnerable release of Cisco NX-OS Software:

       Nexus 7000 Series Switches
       Nexus 7700 Series Switches

    For information about which Cisco NX-OS Software releases are vulnerable,
    see the Fixed Software section of this advisory.

    Determining the Cisco NX-OS Software Release

    Administrators can check the release of Cisco NX-OS Software that is
    running on a device by using the show version command in the device CLI.
    The following example shows the output of this command on a device that is
    running Cisco NX-OS Software Release 7.0(3)I5(1) :

        nxos-switch# show version
        Cisco Nexus Operating System (NX-OS) Software
        TAC support: http://www.cisco.com/tac
        Copyright (C) 2002-2016, Cisco and/or its affiliates.
        All rights reserved.
        The copyrights to certain works contained in this software are
        owned by other third parties and used and distributed under their own
        licenses, such as open source.  This software is provided "as is," and
        unless otherwise stated, there is no warranty, express or implied,
        including but not limited to warranties of merchantability and fitness
        for a particular purpose. Certain components of this software are
        licensed under the GNU General Public License (GPL) version 2.0 or
        GNU General Public License (GPL) version 3.0  or the GNU
        Lesser General Public License (LGPL) Version 2.1 or
        Lesser General Public License (LGPL) Version 2.0.
        A copy of each such license is available at
        http://www.opensource.org/licenses/gpl-2.0.php and
        http://opensource.org/licenses/gpl-3.0.html and
        http://www.opensource.org/licenses/lgpl-2.1.php and
        http://www.gnu.org/licenses/old-licenses/library.txt.
        Software
          BIOS: version 07.57
          NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
          BIOS compile time:  06/29/2016
          NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
          NXOS compile time:  8/1/2016 23:00:00 [08/02/2016 00:30:32]
          .
          .
          .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect the following
    Cisco products:

       Firepower 2100 Series Firewalls
       Firepower 4100 Series Next-Generation Firewalls
       MDS 9000 Series Multilayer Switches
       Firepower 9300 Security Appliance
       Nexus 1000V Switch for Microsoft Hyper-V
       Nexus 1000V Switch for VMware vSphere
       Nexus 2000 Series Fabric Extenders
       Nexus 3000 Series Switches
       Nexus 3500 Platform Switches
       Nexus 3600 Platform Switches
       Nexus 5500 Platform Switches
       Nexus 5600 Platform Switches
       Nexus 6000 Series Switches
       Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
        (ACI) mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules
       UCS 6200 Series Fabric Interconnects
       UCS 6300 Series Fabric Interconnects
       UCS 6400 Series Fabric Interconnects

Details

  o This bundle contains several similar CLI command injection vulnerabilities;
    they differ primarily in which products and software versions are affected.
    This table illustrates the affected products for each vulnerability,
    identified by the defect ID and the CVE ID used in the security advisory
    title.


    Security        FP 4100/   N3K/N9K    N3500      N2K/N5K/   MDS /N7K   N3600 /
    Advisory        9300                             N6K                   N9500R
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvh85760 CSCvh85760 N/A        N/A        N/A
    Injection
    Vulnerability
    (CVE-2019-1606)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01416 N/A
    Injection                                                   ^1
    Vulnerability
    (CVE-2019-1607)
    Cisco NX-OS
    Software CLI
    Command         N/A        N/A        N/A        N/A        CSCvi01422 N/A
    Injection
    Vulnerability
    (CVE-2019-1608)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj63253 CSCvj63253 N/A        CSCvk51388 CSCvk51387
    Injection
    Vulnerability
    (CVE-2019-1609)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj61991 CSCvj61991 N/A        N/A        N/A
    Injection                  ^2
    Vulnerability
    (CVE-2019-1610)
    Cisco NX-OS and
    FXOS Software
    CLI Command     CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
    Injection
    Vulnerability
    (CVE-2019-1611)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvi42373 CSCvi42373 N/A        N/A        CSCvj12009
    Injection
    Vulnerability
    (CVE-2019-1612)
    Cisco NX-OS
    Software CLI
    Command         N/A        CSCvj65654 CSCvk50906 N/A        CSCvj63807 CSCvk50903
    Injection
    Vulnerability
    (CVE-2019-1613)

    ^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
    MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
    ^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
    Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
    this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades, customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC:
    https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Customers are advised to upgrade to an appropriate release as indicated in
    the applicable table in this section. To help ensure a complete upgrade
    solution, customers should consider that this advisory is part of a bundled
    publication. The following page provides a complete list of bundle
    advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
    Security Advisory Bundled Publication .

    In the following tables, the left column lists releases of Cisco FXOS
    Software or Cisco NX-OS Software. The center column indicates whether a
    release is affected by the vulnerability described in this advisory and the
    first release that includes the fix for this vulnerability. The right
    column indicates whether a release is affected by all the vulnerabilities
    described in this bundle and which release includes fixes for those
    vulnerabilities.

    Although the releases listed in the right column of each table include
    fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
    Image Signature Verification Vulnerability requires a BIOS upgrade as part
    of the software upgrade. Customers who are upgrading the software for any
    of the following products are advised to refer to this advisory for further
    details about the BIOS upgrade and affected product IDs and BIOS versions:

       Nexus 3000 Series Switches
       Nexus 9000 Series Fabric Switches in ACI mode
       Nexus 9000 Series Switches in standalone NX-OS mode
       Nexus 9500 R-Series Line Cards and Fabric Modules

    Nexus 7000 and 7700 Series Switches: CSCvi01416


    Cisco NX-OS    First Fixed Release  First Fixed Release for All
    Software       for This             Vulnerabilities Described in the Bundle
    Release        Vulnerability        of Advisories
    Prior to 6.2   Not vulnerable       6.2(22)
    6.2            6.2(22)              6.2(22)
    7.2            7.3(3)D1(1)          8.2(3)
    7.3            7.3(3)D1(1)          8.2(3)
    8.0            8.2(3)               8.2(3)
    8.1            8.2(3)               8.2(3)
    8.2            8.2(3)               8.2(3)
    8.3            Not vulnerable       8.3(2)


    Additional Resources

    For help determining the best Cisco NX-OS Software release for a Cisco
    Nexus Switch, administrators can refer to the following Recommended
    Releases documents. If a security advisory recommends a later release,
    Cisco recommends following the advisory guidance.

        Cisco MDS Series Switches
        Cisco Nexus 1000V for VMware Switch
        Cisco Nexus 3000 Series and 3500 Series Switches
        Cisco Nexus 5000 Series Switches
        Cisco Nexus 5500 Platform Switches
        Cisco Nexus 6000 Series Switches
        Cisco Nexus 7000 Series Switches
        Cisco Nexus 9000 Series Switches
        Cisco Nexus 9000 Series ACI-Mode Switches

    For help determining the best Cisco NX-OS Software release for Cisco UCS,
    refer to the Recommended Releases documents in the release notes for the
    device.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
    Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190306-nxos-cmdinj-1607

Revision History

  o +---------+--------------------------+---------+--------+----------------+
    | Version |       Description        | Section | Status |      Date      |
    +---------+--------------------------+---------+--------+----------------+
    | 1.0     | Initial public release.  | -       | Final  | 2019-March-06  |
    +---------+--------------------------+---------+--------+----------------+

- --------------------------END INCLUDED TEXT--------------------

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Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
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