Stack-based buffer overflow in gif2png.c in gif2png 2.5.3 and earlier might allow context-dependent attackers to execute arbitrary code via a long command-line argument, as demonstrated by a CGI program that launches gif2png.
https://exchange.xforce.ibmcloud.com/vulnerabilities/64820
http://www.vupen.com/english/advisories/2011/0107
http://www.vupen.com/english/advisories/2011/0023
http://www.vupen.com/english/advisories/2010/3036
http://www.securityfocus.com/bid/41801
http://www.mandriva.com/security/advisories?name=MDVSA-2011:009
http://security.gentoo.org/glsa/glsa-201101-01.xml
http://secunia.com/advisories/42796
http://openwall.com/lists/oss-security/2010/11/22/3
http://openwall.com/lists/oss-security/2010/11/22/12
http://openwall.com/lists/oss-security/2010/11/22/1
http://openwall.com/lists/oss-security/2010/11/21/1
http://lists.grok.org.uk/pipermail/full-disclosure/2009-December/072009.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051229.html
http://cvs.fedoraproject.org/viewvc/rpms/gif2png/devel/gif2png-overflow.patch?root=extras&view=log