Cisco Security Advisory
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CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
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Update from October 23, 2020: Cisco has become aware of a new Cisco Adaptive Security Appliance vulnerability that could affect the fixed releases recommended for code trains 9.13 and 9.14 in the Fixed Software section of this advisory. See the Cisco Adaptive Security Appliance Software SSL/TLS Denial of Service Vulnerability for additional information.
A vulnerability in the CLI of Cisco FXOS Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges.
The vulnerability is due to insufficient input validation of commands supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute commands on the underlying operating system with root privileges.
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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-cmdinj-pqZvmXCr
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Vulnerable Products
At the time of publication, this vulnerability affected Cisco FXOS Software when running on the following platforms:
- Firepower 1000 Series Appliances
- Firepower 2100 Series Appliances
- Firepower 4100 Series Appliances
- Firepower 9300 Series Appliances
For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
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There are no workarounds that address this vulnerability.
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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.
Fixed Releases
Firepower 1000 Series and 2100 Series appliances use Cisco FXOS Software as an underlying operating system, which is included in Cisco ASA Software unified image bundles or in Cisco FTD Software unified image bundles.
At the time of publication, the release information in the following table(s) was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability described in this advisory and which release included the fix for this vulnerability.
ASA Software for Firepower 1000 Series and Firepower 2100 Series: CSCvt74037
Cisco ASA Software Release First Fixed Release for this Vulnerability 9.8 9.8.4.29 9.9 9.9.2.80 9.10 9.10.1.40 9.12 9.12.4.3 9.13 9.13.1.13 9.14 Not vulnerable. Note: Firepower 1000 Series and 2100 Series Appliances do not run ASA Software earlier than the 9.8 release.
FTD Software for Firepower 1000 Series and Firepower 2100 Series: CSCvt74037
Cisco FTD Software Release First Fixed Release for this Vulnerability Earlier than 6.2.11 Migrate to a fixed release. 6.2.2 Migrate to a fixed release. 6.2.3 Migrate to a fixed release. 6.3.0 6.3.0.6 (future release) 6.4.0 6.4.0.9 6.5.0 6.5.0.5 (future release) 6.6.0 Not vulnerable. Note: Firepower 1000 Series and 2100 Series Appliances do not run FTD Software earlier than the 6.2.1 release.
1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as releases 6.2.0 and 6.2.1, have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability.
To upgrade to a fixed release of Cisco FTD Software, do one of the following:
- For devices that are managed by using Cisco Firepower Management Center (FMC), use the FMC interface to install the upgrade. After installation is complete, reapply the access control policy.
- For devices that are managed by using Cisco Firepower Device Manager (FDM), use the FDM interface to install the upgrade. After installation is complete, reapply the access control policy.
FXOS Software for Firepower 4100 Series and Firepower 9300 Security Appliances: CSCvt69369
Cisco FXOS Software Release First Fixed Release for this Vulnerability Earlier than 2.2 Migrate to a fixed release. 2.2 Migrate to a fixed release. 2.3 Migrate to a fixed release. 2.4 2.4.1.266 2.6 2.6.1.204 2.7 2.7.1.131 2.8 2.8.1.125
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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.
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This vulnerability was found during internal security testing.
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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.
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Show LessVersion Description Section Status Date 1.1 Updated the Summary section to provide information on a new vulnerability affecting fixed release recommendations for code trains 9.13 and 9.14. Summary Final 2020-OCT-23 1.0 Initial public release. — Final 2020-OCT-21
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