The XWD Decoder in ImageMagick before 6.2.2.3, and GraphicsMagick before 1.1.6-r1, allows remote attackers to cause a denial of service (infinite loop) via an image with a zero color mask.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A960
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11667
http://www.securityfocus.com/bid/13705
http://www.redhat.com/support/errata/RHSA-2005-480.html
http://www.mandriva.com/security/advisories?name=MDKSA-2005:107
http://security.gentoo.org/glsa/glsa-200505-16.xml
http://secunia.com/advisories/15453