CVE-2021-4214

Name	CVE-2021-4214
Description	A heap overflow flaw was found in libpngs' pngimage.c program. This flaw allows an attacker with local network access to pass a specially crafted PNG file to the pngimage utility, causing an application to crash, leading to a denial of service.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, 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
libpng1.6 (PTS)	bullseye	1.6.37-3	vulnerable
	bookworm	1.6.39-2	vulnerable
	trixie	1.6.48-1	vulnerable
	forky, sid	1.6.50-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libpng1.6	source	(unstable)	(unfixed)	unimportant

https://github.com/glennrp/libpng/issues/302
Crash in CLI package, not shipped in binary packages