Bug 1441240 (CVE-2017-7592)

Summary:	CVE-2017-7592 libtiff: Left shift of unsigned char without a cast
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	erik-fedora, mike, nforro, phracek
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-04-11 14:34:42 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:	1438465, 1438466, 1441273
Bug Blocks:

Description Andrej Nemec 2017-04-11 13:30:21 UTC

The putagreytile function in tif_getimage.c in LibTIFF has a left-shift undefined behavior issue, which might allow attackers to cause a denial of service (application crash) via a crafted image. 

Upstream bug:

http://bugzilla.maptools.org/show_bug.cgi?id=2658

Upstream patch:

https://github.com/vadz/libtiff/commit/48780b4fcc425cddc4ef8ffdf536f96a0d1b313b

Comment 1 Andrej Nemec 2017-04-11 14:17:44 UTC

Created mingw-libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1438465]

Comment 2 Andrej Nemec 2017-04-11 14:22:04 UTC

Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1438466]

Comment 3 Andrej Nemec 2017-04-11 14:24:30 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1441273]