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CVE-2021-37615

Published: 9 August 2021

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. A null pointer dereference was found in Exiv2 versions v0.27.4 and earlier. The null pointer dereference is triggered when Exiv2 is used to print 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 printing the interpreted (translated) data, which is a less frequently used Exiv2 operation that requires an extra command line option (`-p t` or `-P t`). The bug is fixed in version v0.27.5.

Notes

AuthorNote
leosilva
bionic, xenial not affected, code not present.

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
exiv2
Launchpad, Ubuntu, Debian
impish
Released (0.27.3-3ubuntu4)
trusty Does not exist

focal
Released (0.27.2-8ubuntu2.6)
hirsute
Released (0.27.3-3ubuntu1.5)
upstream Needs triage

bionic Not vulnerable
(code not present)
xenial Not vulnerable
(code not present)
jammy
Released (0.27.3-3ubuntu4)
Patches:
upstream: https://github.com/Exiv2/exiv2/pull/1758/commits/8e79d9a4e00828777e17276571fb8ed1b7cd49aa (regression test)
upstream: https://github.com/Exiv2/exiv2/pull/1758/commits/18d168959792d1eb42bb71d001ff46b57d6b97ab (fix)
upstream: https://github.com/Exiv2/exiv2/pull/1758/commits/3ac426b2c04004422c290425259082281e090116 (fix)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H