CVE-2021-29623 Information

Description

Exiv2 is a C++ library and a command-line utility to read write delete and modify Exif IPTC XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading writing deleting and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory if they can trick the victim into running Exiv2 on a crafted image file. 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:L/I:N/A:N

Reference

https://github.com/Exiv2/exiv2/pull/1627 https://github.com/Exiv2/exiv2/security/advisories/GHSA-6253-qjwm-3q4v 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

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

3.3