Bug 1677528 (CVE-2019-7663)

Summary:	CVE-2019-7663 libtiff: integer overflow in libtiff/tif_dirwrite.c resulting in an invalid pointer dereference
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	nforro, phracek, scorneli
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:	2020-03-06 13:21:14 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:	1677529
Bug Blocks:	1679012

Description Dhananjay Arunesh 2019-02-15 07:21:46 UTC

An Invalid Address dereference was discovered in
TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF
4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote
attackers could leverage this vulnerability to cause a denial-of-service via a
crafted tiff file. This is different from CVE-2018-12900.

References:
http://bugzilla.maptools.org/show_bug.cgi?id=2833
https://gitlab.com/libtiff/libtiff/merge_requests/60/diffs

Comment 1 Dhananjay Arunesh 2019-02-15 07:21:56 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1677529]

Comment 2 Stefan Cornelius 2020-03-06 13:21:14 UTC


*** This bug has been marked as a duplicate of bug 1630004 ***

Comment 3 Doran Moppert 2020-06-17 03:14:29 UTC

Statement:

This report appears to be a duplicate of CVE-2018-17000.  While the crash manifests differently, both vulnerabilities are fixed by the same upstream commit.