CVE-2021-32815

Name	CVE-2021-32815
Description	Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The assertion failure is triggered when Exiv2 is used to modify 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. Note that this bug is only triggered when modifying the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `fi`. ### Patches The bug is fixed in version v0.27.5. ### References Regression test and bug fix: #1739 ### For more information Please see our [security policy](https://github.com/Exiv2/exiv2/security/policy) for information about Exiv2 security.
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
Debian Bugs	992705

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 (security), buster, buster (lts)	0.25-4+deb10u4	fixed
	bullseye	0.27.3-3+deb11u2	fixed
	bullseye (security)	0.27.3-3+deb11u1	vulnerable
	bookworm	0.27.6-1	fixed
	sid, trixie	0.28.3+dfsg-2	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
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		992705

Notes

[stretch] - exiv2 <no-dsa> (Minor issue)
https://github.com/Exiv2/exiv2/security/advisories/GHSA-mv9g-fxh2-m49m
https://github.com/Exiv2/exiv2/pull/1739