CVE-2017-6790 Denial of service in TelePresence Video Communication Server (VCS)

Medium 6.8 Published 17 Aug 2017 Updated 16 Sep 2024

Unauthenticated remote attackers can cause a denial of service on Cisco TelePresence VCS by sending excessive SIP traffic.

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-2017-6790?

CVE-2017-6790 is a medium-severity denial of service vulnerability in Cisco Systems, Inc. TelePresence Video Communication Server (VCS), published on 17 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Session Initiation Protocol (SIP) on the Cisco TelePresence Video Communication Server (VCS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the targeted appliance. The vulnerability is due to excessive SIP traffic sent to the device. An attacker could exploit this vulnerability by transmitting large volumes of SIP traffic to the VCS. An exploit could allow the attacker to cause a complete DoS condition on the targeted system. Cisco Bug IDs: CSCve32897.

Which versions are affected by CVE-2017-6790?

It affects 1 product.

Products include Cisco Telepresence Video Communication Server.

How do I fix CVE-2017-6790?

No fix has been published for CVE-2017-6790 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-6790 being exploited?

There is no known exploitation of CVE-2017-6790 in the wild and no public exploit code.

Sources

Also known as GHSA-mq47-xg5g-jxq9.