|Description||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.|
|Source||CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)|
|References||DLA-2750-1, DSA-4958-1, ELA-479-1|
Vulnerable and fixed packages
The table below lists information on source packages.
|exiv2 (PTS)||jessie, jessie (lts)||0.24-4.1+deb8u7||fixed|
|stretch (lts), stretch||0.25-3.1+deb9u4||fixed|
|bullseye (security), bullseye||0.27.3-3+deb11u1||fixed|
The information below is based on the following data on fixed versions.
buster-security and bullseye-security updates refer to CVE-2021-31291, which
was an addditional (and then rejected) CVE ID for the same issue as CVE-2021-29457
[jessie] - exiv2 <no-dsa> (Minor issue)