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.
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
| Link | Tags |
|---|---|
| https://github.com/Exiv2/exiv2/issues/1529 | exploit third party advisory patch |
| https://github.com/Exiv2/exiv2/security/advisories/GHSA-v74w-h496-cgqm | third party advisory |
| https://github.com/Exiv2/exiv2/pull/1534 | third party advisory patch |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XQT5F5IINTDYDAFGVGQZ7PMMLG7I5ZZ/ | vendor advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2A5GMJEXQ5Q76JK6F6VKK5JYCLVFGKN/ | vendor advisory |
| https://www.debian.org/security/2021/dsa-4958 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html | third party advisory mailing list |
| https://security.gentoo.org/glsa/202312-06 | vendor advisory |