Bug 1577392 (CVE-2018-10801)

Summary:	CVE-2018-10801 libtiff: memory leak in bmp2tiff tool
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
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, 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:	A vulnerability was found in LibTIFF, where the TIFFClientOpen function in tif_unix.c has a memory leak that could lead to a denial of service. A local attacker could exploit this flaw by tricking a user into opening a specially crafted file, resulting in increased memory usage and potential application crashes due to resource exhaustion.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:22:43 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:	1577314, 1577315, 1577316, 1577393, 1598706
Bug Blocks:	1577318

Description Laura Pardo 2018-05-11 21:39:14 UTC

A flaw was found in LibTIFF 3.8.2TIFF. The ClientOpen function in tif_unix.c file has memory leaks which allow local attackers to cause a denial of service (memory consumption) via crafted file.


References:
http://bugzilla.maptools.org/show_bug.cgi?id=2790

Comment 1 Laura Pardo 2018-05-11 21:41:10 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1577316]


Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1577314]
Affects: fedora-all [bug 1577315]

Comment 5 Riccardo Schirone 2018-07-06 09:32:38 UTC

In bmp2tiff tool a file is opened for writing with TIFFOpen, but when the iBitCount header value is wrong, the tool exits without closing the file.