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AUSCERT External Security Bulletin Redistribution
ESB-2019.2438
Cisco Enterprise NFV Infrastructure Vulnerabilities
4 July 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Enterprise NFV Infrastructure
Publisher: Cisco Systems
Operating System: Network Appliance
Impact/Access: Root Compromise -- Existing Account
Overwrite Arbitrary Files -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-1894 CVE-2019-1893
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-nfvis-file-readwrite
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-nfvis-commandinj
Comment: This bulletin contains two (2) Cisco Systems security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Enterprise NFV Infrastructure Software Arbitrary File Read and Write
Vulnerability
Priority: High
Advisory ID: cisco-sa-20190703-nfvis-file-readwrite
First Published: 2019 July 3 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvn12407
CVE-2019-1894
CWE-20
CVSS Score:
7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in Cisco Enterprise NFV Infrastructure Software (NFVIS)
could allow an authenticated, remote attacker with administrator privileges
to overwrite or read arbitrary files on the underlying operating system
(OS) of an affected device.
The vulnerability is due to improper input validation in NFVIS filesystem
commands. An attacker could exploit this vulnerability by using crafted
variables during the execution of an affected command. A successful exploit
could allow the attacker to overwrite or read arbitrary files on the
underlying OS.
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-20190703-nfvis-file-readwrite
Affected Products
o Vulnerable Products
This vulnerability affects Cisco Enterprise NFV Infrastructure Software
(NFVIS) releases prior to 3.10.1.
Determining the Cisco Enterprise NFVIS Release
To determine which Cisco Enterprise NFVIS release is running on a device,
administrators can use the show version command in the CLI. The following
example shows the output of this command for a device that is running Cisco
Enterprise NFVIS Release 3.11.2:
nfvis# show version
Cisco NFV Infrastructure Software
Version 3.11.2-FC2
.
.
.
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 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
Cisco fixed this vulnerability in Cisco Enterprise NFVIS Release 3.10.1 and
later.
Customers can download Cisco Enterprise NFVIS from the Software Center on
Cisco.com by doing the following:
1. Click Browse all .
2. Choose Routers > Network Functions Virtualization > Enterprise NFV
Infrastructure Software > NFV Infrastructure Software .
3. Access releases by using the left pane of the Enterprise NFV
Infrastructure Software page.
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190703-nfvis-file-readwrite
Revision History
o +---------+---------------------------+---------+--------+---------------+
| Version | Description | Section | Status | Date |
+---------+---------------------------+---------+--------+---------------+
| 1.0 | Initial public release. | - | Final | 2019-July-03 |
+---------+---------------------------+---------+--------+---------------+
- --------------------------------------------------------------------------------
Cisco Enterprise NFV Infrastructure Software Command Injection Vulnerability
Priority: High
Advisory ID: cisco-sa-20190703-nfvis-commandinj
First Published: 2019 July 3 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvn12421
CVE-2019-1893
CWE-77
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 Cisco Enterprise NFV Infrastructure Software (NFVIS)
could allow an authenticated, local attacker to execute arbitrary commands
on the underlying operating system (OS) of an affected device as root .
The vulnerability is due to insufficient input validation of a
configuration file that is accessible to a local shell user. An attacker
could exploit this vulnerability by including malicious input during the
execution of this file. A successful exploit could allow the attacker to
execute arbitrary commands on the underlying OS as root .
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-20190703-nfvis-commandinj
Affected Products
o Vulnerable Products
This vulnerability affects Cisco Enterprise NFV Infrastructure Software
(NFVIS) releases prior to 3.10.1.
Determining the Cisco Enterprise NFVIS Release
To determine which Cisco Enterprise NFVIS release is running on a device,
administrators can use the show version command in the CLI. The following
example shows the output of this command for a device that is running Cisco
Enterprise NFVIS Release 3.11.2:
nfvis# show version
Cisco NFV Infrastructure Software
Version 3.11.2-FC2
.
.
.
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 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
Cisco fixed this vulnerability in Cisco Enterprise NFVIS Release 3.10.1 and
later.
Customers can download Cisco Enterprise NFVIS from the Software Center on
Cisco.com by doing the following:
1. Click Browse all .
2. Choose Routers > Network Functions Virtualization > Enterprise NFV
Infrastructure Software > NFV Infrastructure Software .
3. Access releases by using the left pane of the Enterprise NFV
Infrastructure Software page.
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190703-nfvis-commandinj
Revision History
o +---------+---------------------------+---------+--------+---------------+
| Version | Description | Section | Status | Date |
+---------+---------------------------+---------+--------+---------------+
| 1.0 | Initial public release. | - | Final | 2019-July-03 |
+---------+---------------------------+---------+--------+---------------+
- --------------------------END INCLUDED TEXT--------------------
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