CVE-2021-34716: cisco cisco telepresence video communication server (vcs) expressway Improper Cleanup on Thrown Exception

Vulnerability summary

CVE-2021-34716 is a high (CVSS 9.0) Improper Cleanup on Thrown Exception vulnerability in cisco cisco telepresence video communication server (vcs) expressway. EPSS estimates a 2.40% chance of exploitation in the next 30 days, higher than 83.7% of scored vulnerabilities.

Timeline

1. 18-08-2021
   PublishedVulnerability first disclosed.
2. 07-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to execute arbitrary code on the underlying operating system as the root user. This vulnerability is due to incorrect handling of certain crafted software images that are uploaded to the affected device. An attacker could exploit this vulnerability by authenticating to the system as an administrative user and then uploading specific crafted software images to the affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system as the root user.

• CWE-460Improper Cleanup on Thrown ExceptionThe product does not clean up its state or incorrectly cleans up its state when an exception is thrown, leading to unexpected state or control flow.
• CWE-755Improper Handling of Exceptional ConditionsThe product does not handle or incorrectly handles an exceptional condition.