Bug 1992183 (CVE-2021-37621)

Summary:	CVE-2021-37621 exiv2: DoS due to infinite loop in Image::printIFDStructure
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jgrulich, manisandro, michel, rdieter
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1992184, 1992185, 1995787, 1995788, 1995789
Bug Blocks:	1992216

Description Guilherme de Almeida Suckevicz 2021-08-10 17:39:21 UTC

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.

Reference:
https://github.com/Exiv2/exiv2/security/advisories/GHSA-m479-7frc-gqqg

Upstream patch:
https://github.com/Exiv2/exiv2/pull/1778

Comment 1 Guilherme de Almeida Suckevicz 2021-08-10 17:39:45 UTC

Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1992184]


Created mingw-exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1992185]