CVE-2011-4613

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-02-05 · updated 2026-06-16
Weakness: CWE-264

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.

Affected products

Canonical Ubuntu Linux: 10.04, 10.10, 11.04, 11.10
Debian Linux: all versions
Ubuntu Linux: all versions
xorg-x11-server: all versions

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=652249
http://www.debian.org/security/2011/dsa-2364
http://www.ubuntu.com/usn/USN-1349-1
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=652249
http://www.debian.org/security/2011/dsa-2364
http://www.ubuntu.com/usn/USN-1349-1

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