Division by zero in Exiv2 - CVE-2021-34335

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Main Vulnerability Database Vulnerabilities #VU84713

Division by zero in Exiv2 - CVE-2021-34335

Published: December 22, 2023


Vulnerability identifier: #VU84713
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-34335
CWE-ID: CWE-369
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to divide by zero error in Exiv2::Internal::resolveLens0xffff(). A remote attacker can pass specially crafted file to the application and crash it.


Affected software

Exiv2
Gentoo Linux
Ubuntu
openEuler
Fedora
libexiv2-14 (Ubuntu package)
libexiv2-27 (Ubuntu package)
mingw-exiv2
exiv2-help
exiv2-debuginfo
exiv2-debugsource
exiv2-devel
exiv2
media-gfx/exiv2

How to mitigate CVE-2021-34335

Install update from vendor's website.

Exiv2 - update to 0.27.5 rc1
libexiv2-14 (Ubuntu package) - update to 0.25-3.1ubuntu0.18.04.11
libexiv2-27 (Ubuntu package) - addressed in versions 0.27.2-8ubuntu2.6, 0.27.3-3ubuntu1.5
mingw-exiv2 - addressed in versions 0.27.4-3.fc33, 0.27.4-3.fc34
exiv2-help - addressed in versions 0.27.5-1, 0.27.5-2
exiv2-debuginfo - addressed in versions 0.27.5-1, 0.27.5-2
exiv2-debugsource - addressed in versions 0.27.5-1, 0.27.5-2
exiv2-devel - addressed in versions 0.27.5-1, 0.27.5-2
exiv2 - addressed in versions 0.27.5-1, 0.27.5-2
media-gfx/exiv2 - update to 0.28.1

External References

Related Security Bulletins