Vigil@nce - libgd: NULL pointer dereference via gdImageCreateFromXpmNouvel article
March 2014 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can dereference a NULL pointer in the
gdImageCreateFromXpm() function of libgd, in order to trigger a
denial of service.
– Impacted products: PHP, Unix (platform)
– Severity: 1/4
– Creation date: 14/03/2014
DESCRIPTION OF THE VULNERABILITY
The libgd library is used to process images. It is used by PHP.
The gdImageCreateFromXpm() function reads an XPM image. However,
it does not check if a pointer is NULL, before using it.
An attacker can therefore dereference a NULL pointer in the
gdImageCreateFromXpm() function of libgd, in order to trigger a
denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/libgd-NULL-pointer-dereference-via-gdImageCreateFromXpm-14424