CVE-2009-0749

Name	CVE-2009-0749
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
optipng (PTS)	jessie, jessie (lts)	0.7.5-1+deb8u3	fixed
	stretch (security)	0.7.6-1+deb9u1	fixed
	stretch (lts), stretch	0.7.6-1+deb9u2	fixed
	buster, bullseye	0.7.7-1	fixed
	bookworm	0.7.7-2	fixed
	sid, trixie	0.7.8+ds-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
optipng	source	etch	0.5.5-2
optipng	source	lenny	0.6.1.1-2
optipng	source	(unstable)	0.6.2.1-1	low