Bug 1397765 (CVE-2016-9538)

Summary:	CVE-2016-9538 libtiff: Integer overflow leads to reading undefined buffer in readContigStripsIntoBuffer()
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	erik-fedora, nforro, phracek, slawomir
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:	2017-01-17 08:24:09 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:	1397781, 1397782, 1397783
Bug Blocks:	1397777

Description Adam Mariš 2016-11-23 10:24:25 UTC

It was found that tools/tiffcrop.c in libtiff 4.0.6 reads an undefined buffer in readContigStripsIntoBuffer() because of a uint16 integer overflow.

Upstream patch:

https://github.com/vadz/libtiff/commit/43c0b81a818640429317c80fea1e66771e85024b#diff-c8b4b355f9b5c06d585b23138e1c185f

Comment 1 Adam Mariš 2016-11-23 10:55:37 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1397781]

Comment 2 Adam Mariš 2016-11-23 10:55:43 UTC

Created mingw-libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1397782]
Affects: epel-7 [bug 1397783]

Comment 3 Huzaifa S. Sidhpurwala 2017-03-09 05:32:37 UTC

Statement:

This is an Out-of-bounds read flaw in the libtiff library. A specially-crafted image can cause an application linked with the libtiff library to crash.