CVE-2021-29457 log

Source
Severity Medium
Remote No
Type Arbitrary code execution
Description
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.
Group Package Affected Fixed Severity Status Ticket
AVG-1772 exiv2 0.27.3-1 Medium Vulnerable
References
https://github.com/Exiv2/exiv2/security/advisories/GHSA-v74w-h496-cgqm
https://github.com/Exiv2/exiv2/issues/1529
https://github.com/Exiv2/exiv2/pull/1534
https://github.com/Exiv2/exiv2/commit/13e5a3e02339b746abcaee6408893ca2fd8e289d