The CCITTFax decoding filter in Ghostscript 8.60, 8.61, and possibly other versions, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted PDF file that triggers a buffer underflow in the cf_decode_2d function.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9507
http://www.vupen.com/english/advisories/2009/1708
http://www.securityfocus.com/bid/34337
http://www.securityfocus.com/archive/1/502757/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2009-0421.html
http://www.redhat.com/support/errata/RHSA-2009-0420.html
http://www.openwall.com/lists/oss-security/2009/04/01/10
http://www.mandriva.com/security/advisories?name=MDVSA-2009:096
http://www.mandriva.com/security/advisories?name=MDVSA-2009:095
http://www.mail-archive.com/fedora-package-announce%40redhat.com/msg11830.html
http://wiki.rpath.com/Advisories:rPSA-2009-0060
http://support.avaya.com/elmodocs2/security/ASA-2009-155.htm
http://sunsolve.sun.com/search/document.do?assetkey=1-26-262288-1
http://secunia.com/advisories/35569
http://secunia.com/advisories/35559
http://secunia.com/advisories/35416
http://secunia.com/advisories/34732
http://secunia.com/advisories/34729
http://secunia.com/advisories/34726
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00003.html