SB2022070706 - Multiple vulnerabilities in Cisco Expressway Series and Cisco TelePresence Video Communication Server

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Main Vulnerability Database SB2022070706

SB2022070706 - Multiple vulnerabilities in Cisco Expressway Series and Cisco TelePresence Video Communication Server

Published: July 7, 2022

Security Bulletin ID SB2022070706
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Privilege escalation

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Path traversal (CVE-ID: CVE-2022-20812)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L/E:U/U:Clear


The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the cluster database API. A remote administrator can send a specially crafted HTTP request and overwrite arbitrary files on the system.


2) Improper Neutralization of Null Byte or NUL Character (CVE-ID: CVE-2022-20813)

CWE-ID: CWE-158 - Improper Neutralization of Null Byte or NUL Character

CVSSv4: 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/E:U/U:Green


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.


Remediation

Install update from vendor's website.

References