Cisco FXOS Software and UCS Manager Software Configuration Backup Static Key Vulnerability [CVE-2023-20016]

CVE number = CVE-2023-20016

A vulnerability in the backup configuration feature of Cisco UCS Manager Software and in the configuration export feature of Cisco FXOS Software could allow an unauthenticated attacker with access to a backup file to decrypt sensitive information stored in the full state and configuration backup files.

This vulnerability is due to a weakness in the encryption method used for the backup function. An attacker could exploit this vulnerability by leveraging a static key used for the backup configuration feature. A successful exploit could allow the attacker to decrypt sensitive information that is stored in full state and configuration backup files, such as local user credentials, authentication server passwords, Simple Network Management Protocol (SNMP) community names, and other credentials.

Vulnerable Products

This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco FXOS or Cisco UCS Manager Software:

• Firepower 4100 Series
• Firepower 9300 Security Appliances
• UCS 6200 Series Fabric Interconnects
• UCS 6300 Series Fabric Interconnects
• UCS 6400 Series Fabric Interconnects
• UCS 6500 Series Fabric Interconnects

Note: Cisco FXOS Software releases 2.6.1 and later are not affected by this vulnerability. Only versions earlier than Release 2.6.1 are vulnerable.

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-ucsm-bkpsky-H8FCQgsA