CVE-2021-29458 Information

Description

Exiv2 is a command-line utility and C++ library for reading writing deleting and modifying the metadata of image files. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2 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.

CVSS Vector

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

Reference

https://github.com/Exiv2/exiv2/pull/1536 https://github.com/Exiv2/exiv2/security/advisories/GHSA-57jj-75fm-9rq5 https://github.com/Exiv2/exiv2/issues/1530 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2XQT5F5IINTDYDAFGVGQZ7PMMLG7I5ZZ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P2A5GMJEXQ5Q76JK6F6VKK5JYCLVFGKN/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5