CVE-2019-1854 Cisco Expressway Series Directory Traversal Vulnerability

Medium 4.1 Published 3 May 2019 Updated 21 Nov 2024

Authenticated attackers can bypass security restrictions to access associated Unified Communications Manager interfaces via directory traversal.

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

What is CVE-2019-1854?

CVE-2019-1854 is a medium-severity path traversal vulnerability in Cisco Expressway, published on 3 May 2019. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability in the management web interface of Cisco Expressway Series could allow an authenticated, remote attacker to perform a directory traversal attack against an affected device. The vulnerability is due to insufficient input validation on the web interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web interface. A successful exploit could allow the attacker to bypass security restrictions and access the web interface of a Cisco Unified Communications Manager associated with the affected device. Valid credentials would still be required to access the Cisco Unified Communications Manager interface.

Weakness: CWE-22

Which versions are affected by CVE-2019-1854?

It affects 1 product.

Products include Cisco Telepresence Video Communication Server.

How do I fix CVE-2019-1854?

No fix has been published for CVE-2019-1854 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-2019-1854 being exploited?

There is no known exploitation of CVE-2019-1854 in the wild and no public exploit code.

Sources

Also known as GHSA-r7gg-wq5p-qhgv.