Bug 1537740 (CVE-2018-5784)

Summary:	CVE-2018-5784 libtiff: uncontrolled resource consumption in TIFFSetDirectory function in tif_dir.c
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
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, tgl
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:	2018-01-25 10:37:40 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:	1537741, 1537742, 1537743, 1538575
Bug Blocks:	1537753

Description Laura Pardo 2018-01-23 19:10:35 UTC

A flaw was found in LibTIFF 4.0.9, there is an uncontrolled resource consumption in the TIFFSetDirectory function of tif_dir.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tif file. This is possible because the declared number of directory entries is not validated against the actual number of directory entries.

Reference:
http://bugzilla.maptools.org/show_bug.cgi?id=2772

Comment 1 Laura Pardo 2018-01-23 19:10:59 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1537743]


Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1537741]
Affects: fedora-all [bug 1537742]