CVE-2021-29457

Published: 19 April 2021

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. A heap buffer overflow was found in Exiv2 versions v0.27.3 and earlier. The heap overflow is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when _writing_ 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 `insert`. The bug is fixed in version v0.27.4.

Priority

Medium

CVSS 3 base score: 7.8

Status

Package Release Status
exiv2
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.04 (Hirsute Hippo)
Released (0.27.3-3ubuntu1.1)
Ubuntu 20.10 (Groovy Gorilla)
Released (0.27.3-3ubuntu0.2)
Ubuntu 20.04 LTS (Focal Fossa)
Released (0.27.2-8ubuntu2.2)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (0.25-3.1ubuntu0.18.04.7)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (0.25-2.1ubuntu16.04.7+esm1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Patches:
Upstream: https://github.com/Exiv2/exiv2/pull/1534/commits/13e5a3e02339b746abcaee6408893ca2fd8e289d