CVE-2011-4613 Security feature bypass in n/a
Local attackers can bypass X server access restrictions by misinterpreting stdin as the console TTY, potentially escalating privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-4613?
CVE-2011-4613 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 5 Feb 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The X.Org X wrapper (xserver-wrapper.c) in Debian GNU/Linux and Ubuntu Linux does not properly verify the TTY of a user who is starting X, which allows local users to bypass intended access restrictions by associating stdin with a file that is misinterpreted as the console TTY.
Weakness: CWE-264
Which versions are affected by CVE-2011-4613?
It affects 4 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Ubuntu Linux, X.org X Server.
How do I fix CVE-2011-4613?
Apply the vendor's patch.
Is CVE-2011-4613 being exploited?
There is no known exploitation of CVE-2011-4613 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2011-4613, DSA-2364-1, GHSA-59qr-5c97-267m.