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Cisco Ultra Cloud Core - Subscriber Microservices Infrastructure Privilege Escalation Vulnerability

cisco-sa-uccsmi-prvesc-BQHGe4cm · High · Published · Updated

A vulnerability in the Common Execution Environment (CEE) ConfD CLI of Cisco Ultra Cloud Core - Subscriber Microservices Infrastructure (SMI) software could allow an authenticated, local attacker to escalate privileges on an affected device. This vulnerability is due to insufficient access control in the affected CLI. An attacker could exploit this vulnerability by authenticating as a CEE ConfD CLI user and executing a specific CLI command. A successful exploit could allow an attacker to access privileged containers 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-uccsmi-prvesc-BQHGe4cm

Cisco advisory · CSAF JSON

Workarounds

There are no workarounds that address this vulnerability. However, administrators may reduce the scope of this vulnerability by preventing nonadministrative users from executing CEE ConfD CLI commands. Using administrative credentials, enter the following commands:

config
nacm cmd-exec-default deny nacm rule-list admin group [ admin ] cmdrule cmd-any-access action permit exit exit commit

While this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.

CVEsCVE-2022-20762
Cisco Bug IDsCSCvz40263
CVSS ScoreBase 7.8
Base 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Product Names From Source
Cisco Ultra Cloud Core - Subscriber Microservices Infrastructure

Related Products

Product CVE Evidence
Cisco Ultra Cloud Core - Subscriber Microservices Infrastructure CVE-2022-20762 Cisco OpenVuln