CVE-2021-37621

Denial of service due to infinite loop in Image::printIFDStructure

Description

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An infinite loop was found in Exiv2 versions v0.27.4 and earlier. The infinite loop is triggered when Exiv2 is used to print 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. Note that this bug is only triggered when printing the image ICC profile, which is a less frequently used Exiv2 operation that requires an extra command line option (`-p C`). The bug is fixed in version v0.27.5.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.04%
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-m479-7frc-gqqg third party advisory
https://github.com/Exiv2/exiv2/pull/1778 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-2021-37621?
CVE-2021-37621 has been scored as a medium severity vulnerability.
How to fix CVE-2021-37621?
To fix CVE-2021-37621, 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-2021-37621 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-37621 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-2021-37621?
CVE-2021-37621 affects Exiv2 exiv2.
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