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AUSCERT External Security Bulletin Redistribution
ESB-2019.1518.2
Cisco Application Policy Infrastructure Controller
10 May 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Application Policy Infrastructure Controller
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Root Compromise -- Existing Account
Access Privileged Data -- Console/Physical
Cross-site Scripting -- Existing Account
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-1682 CVE-2019-1586 CVE-2019-1838
CVE-2019-1692
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-apic-priv-escalation
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-apic-encrypt
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-apic-xss
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-apic-info-disc
Comment: This bulletin contains four (4) Cisco Systems security advisories.
Revision History: May 10 2019: Updated fixed software information for cisco-sa-20190501-apic-priv-escalation
May 2 2019: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Application Policy Infrastructure Controller Privilege Escalation
Vulnerability
Priority: High
Advisory ID: cisco-sa-20190501-apic-priv-escalation
First Published: 2019 May 1 16:00 GMT
Last Updated: 2019 May 9 16:00 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvn09779
CVE-2019-1682
CWE-264
CVSS Score:
7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the FUSE filesystem functionality for Cisco Application
Policy Infrastructure Controller (APIC) software could allow an
authenticated, local attacker to escalate privileges to root on an affected
device.
The vulnerability is due to insufficient input validation for certain
command strings issued on the CLI of the affected device. An attacker with
write permissions for files within a readable folder on the device could
alter certain definitions in the affected file. A successful exploit could
allow an attacker to cause the underlying FUSE driver to execute said
crafted commands, elevating the attacker's privileges to root on an
affected device.
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-20190501-apic-priv-escalation
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a Cisco Application Policy Infrastructure Controller (APIC) Software
release prior to 3.2(6i) or 4.1(1i). For information about fixed software
releases, consult the Fixed Software section of this advisory.
To determine which release of APIC Software is running on a device,
administrators can use the show version CLI command. The following example
shows the output of the command for a device running software release 4.0
(3d) :
APIC# show version
Role Id Name Version
---------- ------- -------------- -------
controller 1 APIC 4.0(3d)
.
.
.
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
Firepower 4100 Series
Firepower 9300 Security Appliances
MDS 9000 Series Multilayer Switches
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 5000 Series Switches
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Switching Platform
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
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
This vulnerability is fixed in Cisco Application Policy Infrastructure
Controller (APIC) Software releases 3.2(6i), 4.1(1i), and later.
The recommended action for all Cisco customers running a device with an
affected version is to upgrade to the latest maintenance or latest
long-lived version. Cisco suggests that customers visit the following page
to determine what fixed release to choose: https://www.cisco.com/c/en/us/td
/docs/switches/datacenter/aci/apic/sw/recommended-release/
b_Recommended_Cisco_ACI_Releases.html .
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 Cisco would like to thank Octav Opaschi with Detack GmbH for reporting this
vulnerability.
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190501-apic-priv-escalation
Revision History
o +---------+--------------------+--------------------+--------+-------------+
| Version | Description | Section | Status | Date |
+---------+--------------------+--------------------+--------+-------------+
| | Updated fixed | Vulnerable | | |
| 1.1 | software | Products, Fixed | Final | 2019-May-09 |
| | information. | Releases | | |
+---------+--------------------+--------------------+--------+-------------+
| 1.0 | Initial public | - | Final | 2019-May-01 |
| | release. | | | |
+---------+--------------------+--------------------+--------+-------------+
- --------------------------------------------------------------------------------
Cisco Application Policy Infrastructure Controller Recoverable Encryption Key
Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190501-apic-encrypt
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvn09800
CVE-2019-1586
CWE-320
CVSS Score:
4.6 AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in Cisco Application Policy Infrastructure Controller
(APIC) Software could allow an unauthenticated, local attacker with
physical access to obtain sensitive information from an affected device.
The vulnerability is due to insecure removal of cleartext encryption keys
stored on local partitions in the hard drive of an affected device. An
attacker could exploit this vulnerability by retrieving data from the
physical disk on the affected partition(s). A successful exploit could
allow the attacker to retrieve encryption keys, possibly allowing the
attacker to further decrypt other data and sensitive information on the
device, which could lead to the disclosure of confidential information.
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-20190501-apic-encrypt
Affected Products
o Vulnerable Products
This vulnerability affects only Cisco APIC Software.
For information about affected software releases, consult the Cisco bug ID
(s) at the top of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o For information about fixed software releases , consult the Cisco bug ID(s)
at the top of this advisory.
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.
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 Cisco would like to thank Costin Enache of Detack GmbH for reporting this
vulnerability.
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190501-apic-encrypt
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco Application Policy Infrastructure Controller Web-Based Management
Interface Cross-Site Scripting Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190501-apic-xss
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvo76562
CVE-2019-1838
CWE-79
CVSS Score:
5.4 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in the web-based management interface of Cisco Application
Policy Infrastructure Controller (APIC) could allow an authenticated,
remote attacker to conduct a cross-site scripting (XSS) attack against a
user of the web-based management interface of an affected device.
The vulnerability is due to insufficient validation of user-supplied input
by the web-based management interface. An attacker could exploit this
vulnerability by persuading a user of the interface to click a crafted
link. A successful exploit could allow the attacker to execute arbitrary
script code in the context of the affected interface or access sensitive,
browser-based information.
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-20190501-apic-xss
Affected Products
o Vulnerable Products
This vulnerability affects Cisco APIC and Cisco Virtual APIC. For
information about affected software releases, consult the Cisco bug ID(s)
at the top of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o For information about fixed software releases , consult the Cisco bug ID(s)
at the top of this advisory.
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.
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.
Action Links for This Advisory
o Understanding Cross-Site Scripting (XSS) Threat Vectors
Related to This Advisory
o Cross-Site Scripting
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190501-apic-xss
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco Application Policy Infrastructure Controller Web-Based Management
Interface Usage Information Disclosure Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190501-apic-info-disc
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvn09869
CVE-2019-1692
CWE-200
CVSS Score:
5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in the web-based management interface of Cisco Application
Policy Infrastructure Controller (APIC) Software could allow an
unauthenticated, remote attacker to access sensitive system usage
information.
The vulnerability is due to a lack of proper data protection mechanisms for
certain components in the underlying Application Centric Infrastructure
(ACI). An attacker could exploit this vulnerability by attempting to
observe certain network traffic when accessing the APIC. A successful
exploit could allow the attacker to access and collect certain tracking
data and usage statistics on an affected device.
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-20190501-apic-info-disc
Affected Products
o Vulnerable Products
This vulnerability affects only Cisco APIC Software.
For information about affected software releases, consult the Cisco bug ID
(s) at the top of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o For information about fixed software releases , consult the Cisco bug ID(s)
at the top of this advisory.
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.
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 Cisco would like to thank Felix Wallaschek of Detack GmbH for reporting
this vulnerability.
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190501-apic-info-disc
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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