CVE-2017-12311 Denial of service in Cisco Meeting Server
An unauthenticated remote attacker can cause a denial of service by sending a malformed H.264 frame to Cisco Meeting Server.
- 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-2017-12311?
CVE-2017-12311 is a medium-severity denial of service vulnerability in Cisco Meeting Server, published on 16 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the H.264 decoder function of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a Cisco Meeting Server media process to restart unexpectedly when it receives an illegal H.264 frame. The vulnerability is triggered by an H.264 frame that has an invalid picture parameter set (PPS) value. An attacker could exploit this vulnerability by sending a malformed H.264 frame to the targeted device. An exploit could allow the attacker to cause a denial of service (DoS) condition because the media process could restart. The media session should be re-established within a few seconds, during which there could be a brief interruption in service. Cisco Bug IDs: CSCvg12559.
Which versions are affected by CVE-2017-12311?
It affects 1 product.
Products include Cisco Meeting Server.
How do I fix CVE-2017-12311?
No fix has been published for CVE-2017-12311 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-2017-12311 being exploited?
There is no known exploitation of CVE-2017-12311 in the wild and no public exploit code.
Other vulnerabilities in Cisco Meeting Server
- CVE-2016-6448 Memory corruption in Cisco Meeting Server before 2.0.3 and Acano Server before 1.9.5
- CVE-2017-12249 Misconfiguration in Cisco Meeting Server
- 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
- CVE-2018-0439 Cisco Meeting Server Cross-Site Request Forgery Vulnerability
- CVE-2016-6444 Cross-site request forgery in Cisco Meeting Server 1.8, 1.9, 2.0
Sources
Also known as GHSA-f723-86qq-j5cv.