#VU56424 Improper Verification of Cryptographic Signature in Cisco 8000 Series Routers and Cisco Network Convergence System 540 Series Routers - CVE-2021-34708

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Main Vulnerability Database Vulnerabilities #VU56424

#VU56424 Improper Verification of Cryptographic Signature in Cisco 8000 Series Routers and Cisco Network Convergence System 540 Series Routers - CVE-2021-34708

Published: September 9, 2021


Vulnerability identifier: #VU56424
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-34708
CWE-ID: CWE-347
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Cisco 8000 Series Routers
Cisco Network Convergence System 540 Series Routers
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a local administrator to execute arbitrary code on the system. 

The vulnerability exists due to an unsigned script within the ISO that is not verified when the install request is being processed. A local administrator can modify an ISO image and execute arbitrary code on the affected device. 


Remediation

Install updates from vendor's website.

External links