Path traversal in Unified Communications Manager (CallManager) and Cisco Unified Communications Manager Session Management Edition - CVE-2020-3177

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Main Vulnerability Database Vulnerabilities #VU26981

Path traversal in Unified Communications Manager (CallManager) and Cisco Unified Communications Manager Session Management Edition - CVE-2020-3177

Published: April 16, 2020


Vulnerability identifier: #VU26981
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3177
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 Tool for Auto-Registered Phones Support (TAPS). A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.


Affected software

Unified Communications Manager (CallManager)
Cisco Unified Communications Manager Session Management Edition

How to mitigate CVE-2020-3177

Install update from vendor's website.

Unified Communications Manager (CallManager) - addressed in versions 10.5.2 SU9, 11.5.1 SU7, 12.5.1 SU2
Cisco Unified Communications Manager Session Management Edition - addressed in versions 10.5.2 SU9, 11.5.1 SU7, 12.5.1 SU2

External References

Related Security Bulletins