Improper Verification of Cryptographic Signature in Cisco NX-OS and Cisco UCS - CVE-2024-20397

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Main Vulnerability Database Vulnerabilities #VU101221

Improper Verification of Cryptographic Signature in Cisco NX-OS and Cisco UCS - CVE-2024-20397

Published: December 4, 2024


Vulnerability identifier: #VU101221
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-20397
CWE-ID: CWE-347
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco NX-OS
Cisco UCS

Detailed vulnerability description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to improper signature verification in the bootloader. An attacker with physical access to device or a user with administrative privileges can bypass NX-OS image signature verification and load unverified software.


How to mitigate CVE-2024-20397

Install updates from vendor's website.

Sources