Bug 1644229 (CVE-2018-18557)

Summary:	CVE-2018-18557 libtiff: Out-of-bounds write in tif_jbig.c
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, dbaker, jokerman, nforro, phracek, sthangav, 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:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 19:19:57 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:	1644230, 1647737, 1647738
Bug Blocks:	1644231

Description Andrej Nemec 2018-10-30 09:36:23 UTC

LibTIFF 4.0.9 (with JBIG enabled) decodes arbitrarily-sized JBIG into a buffer, ignoring the buffer size, which leads to a tif_jbig.c JBIGDecode out-of-bounds write.

Upstream MR:

https://gitlab.com/libtiff/libtiff/merge_requests/38

References:

https://bugs.chromium.org/p/project-zero/issues/detail?id=1697

Comment 1 Andrej Nemec 2018-10-30 09:37:13 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1644230]

Comment 5 Stefan Cornelius 2018-11-08 09:31:44 UTC

Statement:

This issue did not affect the versions of libtiff as shipped with Red Hat Enterprise Linux 5 and 6.

This issue affects the versions of libtiff as shipped with Red Hat Enterprise Linux 7.

Comment 6 errata-xmlrpc 2019-08-06 12:09:03 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 19:19:57 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-2018-18557