Summary

• A vulnerability in the Redfish API of Cisco UCS B-Series, Cisco UCS Managed C-Series, and Cisco UCS X-Series Servers could allow an authenticated, remote attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root.

  This vulnerability is due to insufficient input validation. An attacker with administrative privileges could exploit this vulnerability by sending crafted commands through the Redfish API on an affected device. A successful exploit could allow the attacker to elevate privileges to 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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-redfish-cominj-sbkv5ZZ

Affected Products

• Vulnerable Products

  At the time of publication, this vulnerability affected the following Cisco products:

  • UCS B-Series Blade Servers
  • UCS Managed C-Series Rack Servers
  • UCS X-Series Modular System

  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.

  Note: Redfish is enabled by default in Cisco UCS B-Series, Cisco UCS Managed C-Series, and Cisco UCS X-Series Servers. To access it, configure the device with a Management IP address.

  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 Cisco UCS C-Series Rack Servers in standalone mode.

Workarounds

• There are no workarounds that address this vulnerability.

Fixed Software

• When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories 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

  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.

  UCS B-Series, C-Series, and X-Series Servers in UCS Manager Mode

  Cisco UCS Server Software	First Fixed Release
  Earlier than 4.3	Not vulnerable.
  4.3	4.3(4a) (All other platforms) 4.3(4d) (UCS C-Series M5)

  UCS B-Series Servers in Intersight Management Mode

  Cisco Intersight Server Firmware Release	First Fixed Release
  Earlier than 4.2	Migrate to a fixed release.
  4.2	4.2(3j)
  5.1	Migrate to a fixed release.
  5.2	5.2(2.240051)

  UCS C-Series Servers in Intersight Management Mode

  Cisco Intersight Server Firmware Release	First Fixed Release
  Earlier than 4.2	Migrate to a fixed release.
  4.2	4.2(3m)
  4.3	4.3(4.240152) (M6, M7) 4.3(2.240090) (M5)

  UCS X-Series Servers in Intersight Management Mode

  Cisco Intersight Server Firmware Release	First Fixed Release
  5.0	5.0(4g)
  5.1	Migrate to a fixed release.
  5.2	5.2(2.240053)

  The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.

Exploitation and Public Announcements

• The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Source

• This vulnerability was found during internal security testing.

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-redfish-cominj-sbkv5ZZ

Revision History

• Version	Description	Section	Status	Date
  1.0	Initial public release.	-	Final	2024-OCT-02

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