Main Vulnerability Database Vulnerabilities #VU72510

Improper Authentication in Cisco Systems, Inc products - CVE-2023-20012

Published: February 23, 2023

Vulnerability identifier: #VU72510

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-20012

CWE-ID: CWE-287

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to bypass authentication process.

The vulnerability exists due to the improper implementation of the password validation function. An attacker with physical access can bypass authentication and execute a limited set of commands local to the FEX, leading to a device reboot and denial of service (DoS) condition.

Affected software

Cisco Nexus 9300-FX3 Series Fabric Extender (FEX)
UCS 6400 Series Fabric Interconnects
UCS 6500 Series Fabric Interconnects
N9K-C93180YC-FX3
N9K-C93180YC-FX3S
Cisco UCS Manager

How to mitigate CVE-2023-20012

Install updates from vendor's website.

Cisco UCS Manager - update to 4.2(2d)

External References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-elyfex-dos-gfvcByx

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