{"id":"CVE-2009-0749","details":"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.","modified":"2026-04-10T03:40:37.676041Z","published":"2009-03-02T20:30:00Z","references":[{"type":"ADVISORY","url":"http://secunia.com/advisories/34035"},{"type":"ADVISORY","url":"http://secunia.com/advisories/34201"},{"type":"ADVISORY","url":"http://secunia.com/advisories/34259"},{"type":"ADVISORY","url":"http://secunia.com/advisories/35685"},{"type":"ADVISORY","url":"http://www.gentoo.org/security/en/glsa/glsa-200903-12.xml"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/33873"},{"type":"ADVISORY","url":"http://www.vupen.com/english/advisories/2009/0510"},{"type":"ADVISORY","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/48879"},{"type":"ARTICLE","url":"http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00001.html"},{"type":"ARTICLE","url":"http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2009/02/24/2"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2009/02/25/4"},{"type":"FIX","url":"http://www.securityfocus.com/bid/33873"},{"type":"FIX","url":"http://www.vupen.com/english/advisories/2009/0510"},{"type":"REPORT","url":"http://sourceforge.net/tracker/index.php?func=detail&aid=2582013&group_id=151404&atid=780913"},{"type":"WEB","url":"http://optipng.sourceforge.net"},{"type":"WEB","url":"http://www.securityfocus.com/bid/33873"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}