Bug 1992213 (CVE-2021-37615)

Summary:	CVE-2021-37615 exiv2: NULL pointer dereference in Exiv2::Internal::resolveLens0x319
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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Regression:	---	Mount Type:	---
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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:	1992214, 1992215, 1996176, 1996177, 1996178
Bug Blocks:	1992216

Description Guilherme de Almeida Suckevicz 2021-08-10 18:07:11 UTC

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. A null pointer dereference was found in Exiv2 versions v0.27.4 and earlier. The null pointer dereference 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 interpreted (translated) data, which is a less frequently used Exiv2 operation that requires an extra command line option (`-p t` or `-P t`). The bug is fixed in version v0.27.5.

Reference:
https://github.com/Exiv2/exiv2/security/advisories/GHSA-h9x9-4f77-336w

Upstream patch:
https://github.com/Exiv2/exiv2/pull/1758

Comment 1 Guilherme de Almeida Suckevicz 2021-08-10 18:07:30 UTC

Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1992214]


Created mingw-exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1992215]