CVE-2021-37620

Name	CVE-2021-37620
Description	Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An out-of-bounds read was found in Exiv2 versions v0.27.4 and earlier. The out-of-bounds read is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.5.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3265-1, ELA-766-1, ELA-767-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
exiv2 (PTS)	jessie, jessie (lts)	0.24-4.1+deb8u7	fixed
	stretch (security)	0.25-3.1+deb9u3	vulnerable
	stretch (lts), stretch	0.25-3.1+deb9u4	fixed
	buster	0.25-4+deb10u2	vulnerable
	buster (security)	0.25-4+deb10u4	fixed
	bullseye	0.27.3-3+deb11u2	fixed
	bullseye (security)	0.27.3-3+deb11u1	vulnerable
	trixie, sid, bookworm	0.27.6-1	fixed

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

Package	Type	Release	Fixed Version	Origin
exiv2	source	jessie	0.24-4.1+deb8u7	ELA-767-1
exiv2	source	stretch	0.25-3.1+deb9u4	ELA-766-1
exiv2	source	buster	0.25-4+deb10u4	DLA-3265-1
exiv2	source	bullseye	0.27.3-3+deb11u2
exiv2	source	(unstable)	0.27.5-1

Notes

[stretch] - exiv2 <ignored> (Minor issue)
https://github.com/Exiv2/exiv2/security/advisories/GHSA-v5g7-46xf-h728
https://github.com/Exiv2/exiv2/pull/1769