Bug 1631078 (CVE-2018-17101)

Summary:	CVE-2018-17101 libtiff: Two out-of-bounds writes in cpTags in tools/tiff2bw.c and tools/pal2rgb.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abhgupta, ahardin, bleanhar, ccoleman, dbaker, dedgar, erik-fedora, jgoulding, mchappel, mike, nforro, phracek, rh-spice-bugs, sthangav, tgl, trankin
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 an out-of-bounds write in the cpTags function in tools/tiff2bw.c and tools/pal2rgb.c could lead to a denial of service., anattacker could exploit this flaw by convincing a victim to open a specially crafted file, potentially causing the application to crash.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 19:19:46 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:	1631079, 1631080, 1631082, 1631083, 1631084, 1632579
Bug Blocks:	1631081

Description Pedro Sampaio 2018-09-19 20:29:54 UTC

An issue was discovered in LibTIFF 4.0.9. There are two out-of-bounds writes in cpTags in tools/tiff2bw.c and tools/pal2rgb.c, which can cause a denial of service (application crash) or possibly have unspecified other impact via a crafted image file.

Upstream issue:

http://bugzilla.maptools.org/show_bug.cgi?id=2807

Upstream patch:

https://gitlab.com/libtiff/libtiff/merge_requests/33/diffs?commit_id=f1b94e8a3ba49febdd3361c0214a1d1149251577

Comment 1 Pedro Sampaio 2018-09-19 20:30:56 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1631079]


Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1631082]
Affects: fedora-all [bug 1631080]

Comment 3 Huzaifa S. Sidhpurwala 2018-09-25 07:24:27 UTC

Out of bounds write, seems non-exploitable, so mostly crash only.

Comment 6 errata-xmlrpc 2019-08-06 12:08:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2053 https://access.redhat.com/errata/RHSA-2019:2053

Comment 7 Product Security DevOps Team 2019-08-06 19:19:46 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-17101