Bug 1325093 – CVE-2016-3945 libtiff: out-of-bounds write in the tiff2rgba tool

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Bug 1325093 - (CVE-2016-3945) CVE-2016-3945 libtiff: out-of-bounds write in the tiff2rgba tool

Summary:	CVE-2016-3945 libtiff: out-of-bounds write in the tiff2rgba tool

Status:	CLOSED ERRATA

Aliases:	CVE-2016-3945

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160408,repor...
Keywords:	Security

Depends On:	1299920 1299921 1335098 1335099
Blocks:	1316881
	Show dependency tree / graph

Reported:	2016-04-08 04:24 EDT by Andrej Nemec
Modified:	2017-08-24 04:35 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-08-24 04:35:04 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:1546	normal	SHIPPED_LIVE	Important: libtiff security update	2016-08-02 16:59:03 EDT
Red Hat Product Errata	RHSA-2016:1547	normal	SHIPPED_LIVE	Important: libtiff security update	2016-08-02 16:39:45 EDT

Groups: None (edit)

Description Andrej Nemec 2016-04-08 04:24:48 EDT

Out-of-bounds write vulnerability was found in cvt_by_strip and cvt_by_tile functions in tiff2rgba, allowing attacker to cause a denial of service or command execution via a crafted TIFF image.

Public via:

http://seclists.org/oss-sec/2016/q2/30

Upstream bug:

http://bugzilla.maptools.org/show_bug.cgi?id=2545

Comment 6 errata-xmlrpc 2016-08-02 12:41:40 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:1547 https://rhn.redhat.com/errata/RHSA-2016-1547.html

Comment 7 errata-xmlrpc 2016-08-02 13:01:07 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:1546 https://rhn.redhat.com/errata/RHSA-2016-1546.html

Comment 8 Even Rouault 2016-08-04 05:29:57 EDT

It would have been good to attach your patch to the upstream bug instead of letting libtiff maintainers to dig into the .src.rpm

Comment 9 Even Rouault 2016-08-15 16:12:32 EDT

Patch tiff-CVE-2016-3945.patch from libtiff-4.0.3-25.el7_2.src.rpm is incorrect. It rejects valid files. Fixed in libtiff upstream per :

Fixed per:

2016-08-15 Even Rouault <even.rouault at spatialys.com>

* tools/tiff2rgba.c: Fix integer overflow in size of allocated
buffer, when -b mode is enabled, that could result in out-of-bounds
write. Based initially on patch tiff-CVE-2016-3945.patch from
libtiff-4.0.3-25.el7_2.src.rpm by Nikola Forro, with correction for
invalid tests that rejected valid files.

/cvs/maptools/cvsroot/libtiff/tools/tiff2rgba.c,v  <--  tools/tiff2rgba.c
new revision: 1.22; previous revision: 1.21

See http://bugzilla.maptools.org/show_bug.cgi?id=2545

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