News
Vigil@nce - pixman: integer overflow via a trapezoid
January 2014 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can generate an integer overflow when pixman displays
a trapezoid, in order to trigger a denial of service, and possibly
to execute code.
Impacted products: Debian, MBS, MES, RHEL, Unix (platform)
Severity: 2/4
Creation date: 20/12/2013
DESCRIPTION OF THE VULNERABILITY
The pixman graphic library processes pixels.
However, the pixman_trapezoid_valid() macro file does not check if
a trapezoid is valid.
An attacker can therefore generate an integer overflow when pixman
displays a trapezoid, in order to trigger a denial of service, and
possibly to execute code.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/pixman-integer-overflow-via-a-trapezoid-13972
