CVE-2021-32617 Information

Description

Exiv2 is a command-line utility and C++ library for reading writing deleting and modifying the metadata of image files. An inefficient algorithm (quadratic complexity) was found in Exiv2 versions v0.27.3 and earlier. The inefficient algorithm 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 if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4. 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 rm.

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/1657 https://github.com/Exiv2/exiv2/security/advisories/GHSA-w8mv-g8qq-36mj https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5I3RRZUGSBIUYZ5TIHLN55PKMAWCSJ5G/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M2BPQNJKTRIDINTVJ22QMMTIZEPHVKXK/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RQAKFIQHW2AS3AGSJM42ABOA6CWIJBGM/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TZ5SGWHK64TB7ADRSVBGHEPDFN5CSOO3/

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