Bug 1545246 (CVE-2017-17722)

Summary:	CVE-2017-17722 exiv2: reachable assertion in the readHeader function in bigtiffimage.cpp
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jgrulich, mcepl, michel, rdieter, rschiron
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A reachable assertion was found in Exiv2 while reading the header of a BigTIFF image. By persuading a victim to open a crafted BigTIFF image, a remote attacker could crash the application.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-02-23 09:44:43 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:	1545247, 1547608
Bug Blocks:	1545252

Description Laura Pardo 2018-02-14 13:17:49 UTC

A flaw was found in Exiv2 from commit 307faae8304d. When the library is
compiled in Debug mode, there is a reachable assertion in the readHeader
function in bigtiffimage.cpp, which will lead to a crash via a crafted BigTIFF
file.


References:
https://bugzilla.redhat.com/show_bug.cgi?id=1524116
https://github.com/Exiv2/exiv2/issues/228
https://github.com/Exiv2/exiv2/issues/208

Patch:
https://github.com/Exiv2/exiv2/commit/1647908e00a4df7246d76678e59587e62c690dcd

Comment 1 Laura Pardo 2018-02-14 13:18:27 UTC

Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1545247]

Comment 4 Riccardo Schirone 2018-02-21 15:44:02 UTC

Statement:

This issue did not affect the versions of Exiv2 as shipped with Red Hat Enterprise Linux 6 and 7 as they did not include support for BigTIFF images.