Bug 1397734 (CVE-2016-9448)

Summary:	CVE-2016-9448 libtiff: Null pointer dereference in TIFFFetchNormalTag() (regression of CVE-2016-9297)
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	erik-fedora, 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:	2017-01-16 06:38:15 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 09:44:01 UTC

A null pointer dereference vulnerability in TIFFFetchNormalTag() occurs when values of tags with TIFF_SETGET_C16_ASCII / TIFF_SETGET_C32_ASCII access are 0-byte arrays.

Fix for CVE-2016-9297 introduced this issue.

Upstream bug:

http://bugzilla.maptools.org/show_bug.cgi?id=2593

CVE assignment:

http://seclists.org/oss-sec/2016/q4/464

Comment 1 Adam Mariš 2016-11-23 10:56:50 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1397781]

Comment 2 Adam Mariš 2016-11-23 10:56:56 UTC

Created mingw-libtiff tracking bugs for this issue:

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