Bug 1990330 (CVE-2021-31292)

Summary:	CVE-2021-31292 exiv2: Integer overflow in CrwMap:encode0x1810 leading to heap-based buffer overflow and DoS
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jgrulich, manisandro, michel, rdieter
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	exiv2 0.27.4	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in exiv2. A integer wraparound in the CrwMap:encode0x1810 function leads to memcpy call with a very large size allowing an attacker, who can provide a malicious image, to crash an application which uses the exiv2 library. The highest threat from this vulnerability is to service availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-10 01:22:49 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1989860, 1990331, 1990332, 1990385, 1990399
Bug Blocks:	1990333

Description Marian Rehak 2021-08-05 08:32:22 UTC

An integer overflow in CrwMap::encode0x1810 of Exiv2 0.27.3 allows attackers to trigger a heap-based buffer overflow and cause a denial of service (DOS) via crafted metadata.

Upstream Issue:

https://github.com/Exiv2/exiv2/issues/1530

Comment 1 Marian Rehak 2021-08-05 08:32:40 UTC

Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1990331]


Created mingw-exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1990332]

Comment 2 Riccardo Schirone 2021-08-05 10:14:45 UTC

Upstream patch:
https://github.com/Exiv2/exiv2/commit/9b7a19f957af53304655ed1efe32253a1b11a8d0

Comment 6 errata-xmlrpc 2021-11-09 17:34:41 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4173 https://access.redhat.com/errata/RHSA-2021:4173

Comment 7 errata-xmlrpc 2021-11-09 18:13:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4319 https://access.redhat.com/errata/RHSA-2021:4319

Comment 8 Product Security DevOps Team 2021-11-10 01:22:47 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-31292