CVE-2023-20105 Privilege escalation in Cisco TelePresence Video Communication Server (VCS) Expressway

Critical 9.6 Published 28 Jun 2023 Updated 2 Aug 2024

Authenticated remote attackers with Read-only credentials can elevate privileges to Administrator by exploiting incorrect password change handling in Cisco Expressway and VCS.

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

What is CVE-2023-20105?

CVE-2023-20105 is a critical vulnerability in Cisco TelePresence Video Communication Server (VCS) Expressway, published on 28 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the change password functionality of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker with Read-only credentials to elevate privileges to Administrator on an affected system. This vulnerability is due to incorrect handling of password change requests. An attacker could exploit this vulnerability by authenticating to the application as a Read-only user and sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to alter the passwords of any user on the system, including an administrative user, and then impersonate that user. Note: Cisco Expressway Series refers to the Expressway Control (Expressway-C) device and the Expressway Edge (Expressway-E) device.

Weakness: CWE-20

Which versions are affected by CVE-2023-20105?

It affects 1 product.

Products include Cisco Telepresence Video Communication Server.

How do I fix CVE-2023-20105?

No fix has been published for CVE-2023-20105 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-20105 being exploited?

There is no known exploitation of CVE-2023-20105 in the wild and no public exploit code.

Sources

Also known as GHSA-8vgw-329g-hrw6.