Division by zero in Exiv2 - CVE-2021-34335
Published: December 22, 2023
Vulnerability identifier: #VU84713
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2021-34335
CWE-ID: CWE-369
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GNU
Affected software:
Exiv2
Exiv2
Detailed vulnerability description
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.
How to mitigate CVE-2021-34335
Install update from vendor's website.
Sources
- https://github.com/Exiv2/exiv2/security/advisories/GHSA-pvjp-m4f6-q984
- https://github.com/Exiv2/exiv2/pull/1750
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FMDT4PJB7P43WSOM3TRQIY3J33BAFVVE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UYGDELIFFJWKUU7SO3QATCIXCZJERGAC/