Off-by-one error in the Ins_MINDEX function in the TrueType bytecode interpreter in Ghostscript before 8.71 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via a malformed TrueType font in a document that trigger an integer overflow and a heap-based buffer overflow.
https://rhn.redhat.com/errata/RHSA-2012-0095.html
http://www.securitytracker.com/id?1024785
http://www.securityfocus.com/archive/1/514892/100/0/threaded
http://www.kb.cert.org/vuls/id/JALR-87YGN8