CVE-2021-29623

Uninitialized variable bug in Exiv2

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.

Category

3.6
CVSS
Severity: Low
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.39%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org 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-6253-qjwm-3q4v third party advisory patch
https://github.com/Exiv2/exiv2/pull/1627 third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5I3RRZUGSBIUYZ5TIHLN55PKMAWCSJ5G/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M2BPQNJKTRIDINTVJ22QMMTIZEPHVKXK/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RQAKFIQHW2AS3AGSJM42ABOA6CWIJBGM/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZ5SGWHK64TB7ADRSVBGHEPDFN5CSOO3/ vendor advisory
https://security.gentoo.org/glsa/202312-06 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-29623?
CVE-2021-29623 has been scored as a low severity vulnerability.
How to fix CVE-2021-29623?
To fix CVE-2021-29623, 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-2021-29623 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-29623 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-2021-29623?
CVE-2021-29623 affects Exiv2 exiv2.
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