Main Vulnerability Database Vulnerabilities #VU64963

Improper Neutralization of Null Byte or NUL Character in Expressway Series and Cisco TelePresence Video Communication Server - CVE-2022-20813

Published: July 7, 2022

Vulnerability identifier: #VU64963

CSH Severity: Medium

CVSS v4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-20813

CWE-ID: CWE-158

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to improper certificate validation. A remote attacker can perform a man-in-the-middle attack and view the intercepted traffic in clear text or alter the contents of the traffic.

Affected software

Expressway Series
Cisco TelePresence Video Communication Server

How to mitigate CVE-2022-20813

Install updates from vendor's website.

Expressway Series - update to 14.0.7
Cisco TelePresence Video Communication Server - update to 14.0.7

External References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-overwrite-3buqW8LH

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