CVE-2016-6445 Auth bypass in Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6

Critical 9.1 Published 27 Oct 2016 Updated 6 Aug 2024

An unauthenticated remote attacker can masquerade as a legitimate user by exploiting a flaw in the XMPP service's deprecated authentication processing.

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-2016-6445?

CVE-2016-6445 is a critical authentication bypass vulnerability in Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6, published on 27 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Extensible Messaging and Presence Protocol (XMPP) service of the Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6 could allow an unauthenticated, remote attacker to masquerade as a legitimate user. This vulnerability is due to the XMPP service incorrectly processing a deprecated authentication scheme. A successful exploit could allow an attacker to access the system as another user.

Weakness: CWE-20

Which versions are affected by CVE-2016-6445?

It affects 1 product.

Products include Cisco Meeting Server.

How do I fix CVE-2016-6445?

No fix has been published for CVE-2016-6445 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2016-6445 being exploited?

There is no known exploitation of CVE-2016-6445 in the wild and no public exploit code.

Sources

Also known as GHSA-gcmr-695p-fx75.