CVE-2021-29457

Click the icon to Follow me:- twitterTelegramRedditDiscord

Summary:

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.

Reference Links(if available):

  • https://github.com/Exiv2/exiv2/issues/1529
  • https://github.com/Exiv2/exiv2/pull/1534
  • https://github.com/Exiv2/exiv2/security/advisories/GHSA-v74w-h496-cgqm
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/2XQT5F5IINTDYDAFGVGQZ7PMMLG7I5ZZ/
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/P2A5GMJEXQ5Q76JK6F6VKK5JYCLVFGKN/
  • CVSS Score (if available)

    v2: / MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

    v3: / HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

    Links to Exploits(if available)