CVE-2021-34334

Denial of service due to integer overflow in loop counter

Description

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An infinite loop is triggered when Exiv2 is used to read the metadata of 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 v0.27.5.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org
Affected: Exiv2 exiv2
Published at:
Updated at:

References

Link Tags
https://github.com/Exiv2/exiv2/security/advisories/GHSA-hqjh-hpv8-8r9p third party advisory patch
https://github.com/Exiv2/exiv2/pull/1766 third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMDT4PJB7P43WSOM3TRQIY3J33BAFVVE/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UYGDELIFFJWKUU7SO3QATCIXCZJERGAC/ vendor advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00004.html third party advisory mailing list
https://security.gentoo.org/glsa/202312-06 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-34334?
CVE-2021-34334 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34334?
To fix CVE-2021-34334, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34334 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34334 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34334?
CVE-2021-34334 affects Exiv2 exiv2.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.