Main Vulnerability Database Vulnerabilities #VU56028

Improper Verification of Cryptographic Signature in Cisco Expressway and Cisco TelePresence Video Communication Server - CVE-2021-34715

Published: August 23, 2021

Vulnerability identifier: #VU56028

CSH Severity: Low

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-34715

CWE-ID: CWE-347

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to compromise the target system.

The vulnerability exists due to insufficient validation of the content of upgrade packages. A remote administrator can upload a malicious archive to the Upgrade page and execute arbitrary code on the target system.

Affected software

Cisco Expressway
Cisco TelePresence Video Communication Server

How to mitigate CVE-2021-34715

Install updates from vendor's website.

Cisco Expressway - update to X14.0.3
Cisco TelePresence Video Communication Server - update to X14.0.3

External References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewver-c6WZPXRx

Related Security Bulletins