PRIOn knowledge basePRION:CVE-2009-0749Design/Logic Flaw
Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a crafted GIF image that causes the realloc function to return a new pointer, which triggers memory corruption when the old pointer is accessed.
References
lists.opensuse.org/opensuse-security-announce/2009-03/msg00001.html
lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
optipng.sourceforge.net
secunia.com/advisories/34035
secunia.com/advisories/34201
secunia.com/advisories/34259
secunia.com/advisories/35685
sourceforge.net/tracker/index.php?func=detail&aid=2582013&group_id=151404&atid=780913
www.gentoo.org/security/en/glsa/glsa-200903-12.xml
www.openwall.com/lists/oss-security/2009/02/24/2
www.openwall.com/lists/oss-security/2009/02/25/4
www.securityfocus.com/bid/33873
www.vupen.com/english/advisories/2009/0510
exchange.xforce.ibmcloud.com/vulnerabilities/48879
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