Multiple integer overflows in (1) the XGetPixel function in ImUtil.c in X.Org libx11 before 1.0.3, and (2) XInitImage function in xwd.c for ImageMagick, allow user-assisted remote attackers to cause a denial of service (crash) or obtain sensitive information via crafted images with large or negative values that trigger a buffer overflow.
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=231684
http://www.vupen.com/english/advisories/2007/1531
http://www.ubuntu.com/usn/usn-453-2
http://www.ubuntu.com/usn/usn-453-1
http://www.securitytracker.com/id?1017864
http://www.securityfocus.com/bid/23300
http://www.securityfocus.com/archive/1/464816/100/0/threaded
http://www.securityfocus.com/archive/1/464686/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2007-0157.html
http://www.redhat.com/support/errata/RHSA-2007-0126.html
http://www.openbsd.org/errata40.html#011_xorg
http://www.openbsd.org/errata39.html#021_xorg
http://www.novell.com/linux/security/advisories/2007_8_sr.html
http://www.mandriva.com/security/advisories?name=MDKSA-2007:079
http://www.gentoo.org/security/en/glsa/glsa-200805-07.xml
http://www.debian.org/security/2009/dsa-1858
http://www.debian.org/security/2007/dsa-1294
http://support.avaya.com/elmodocs2/security/ASA-2007-176.htm
http://support.apple.com/kb/HT3438
http://secunia.com/advisories/36260
http://rhn.redhat.com/errata/RHSA-2007-0125.html
http://lists.freedesktop.org/archives/xorg-announce/2007-April/000286.html
http://lists.apple.com/archives/security-announce/2009/Feb/msg00000.html