Path traversal in Cisco Systems, Inc products - CVE-2020-3143

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Main Vulnerability Database Vulnerabilities #VU24664

Path traversal in Cisco Systems, Inc products - CVE-2020-3143

Published: January 27, 2020


Vulnerability identifier: #VU24664
CSH Severity: High
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3143
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to input validation error when processing directory traversal sequences in the video endpoint API. A remote authenticated attacker can send a specially crafted HTTP request and read and write arbitrary files on the system.

This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco TelePresence CE Software, Cisco TC Software, or Cisco RoomOS Software:

  • Cisco TelePresence Integrator C Series
  • Cisco TelePresence MX Series
  • Cisco TelePresence SX Series
  • Cisco TelePresence System EX Series
  • Cisco Webex Board
  • Cisco Webex DX Series
  • Cisco Webex Room Series


Affected software

Cisco RoomOS
Cisco TelePresence Codec (TC)
Cisco TelePresence Collaboration Endpoint (CE)

How to mitigate CVE-2020-3143

Install update from vendor's website.

Cisco RoomOS - update to Januray Drop 1 2020
Cisco TelePresence Codec (TC) - update to 7.3.20
Cisco TelePresence Collaboration Endpoint (CE) - addressed in versions 9.8.3, 9.9.2, 9.10.0

External References

Related Security Bulletins