CVE-2020-3177 Cisco Unified Communications Manager Path Traversal Vulnerability

High 7.5 Published 15 Apr 2020 Updated 15 Nov 2024

Unauthenticated remote attackers can read arbitrary files via directory traversal in the TAPS interface of Cisco Unified Communications Manager.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3177?

CVE-2020-3177 is a high-severity path traversal vulnerability in Cisco Unified Communications Manager, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Tool for Auto-Registered Phones Support (TAPS) of Cisco Unified Communications Manager (UCM) and Cisco Unified Communications Manager Session Management Edition (SME) could allow an unauthenticated, remote attacker to conduct directory traversal attacks on an affected device. The vulnerability is due to insufficient validation of user-supplied input to the TAPS interface of the affected device. An attacker could exploit this vulnerability by sending a crafted request to the TAPS interface. A successful exploit could allow the attacker to read arbitrary files in the system.

Weakness: CWE-22

Which versions are affected by CVE-2020-3177?

It affects 2 products.

Products include Cisco Unified Communications Manager, Cisco Unified Contact Center Express.

How do I fix CVE-2020-3177?

No fix has been published for CVE-2020-3177 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2020-3177 being exploited?

There is no known exploitation of CVE-2020-3177 in the wild and no public exploit code.

All Cisco Unified Communications Manager vulnerabilities

Sources

Also known as GHSA-fpr9-pr9g-872c.