Bug 1298906 (CVE-2016-0494)

Summary:	CVE-2016-0494 ICU: integer signedness issue in IndicRearrangementProcessor (OpenJDK 2D, 8140543)
Product:	[Other] Security Response	Reporter:	Tomas Hoger <thoger>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	unspecified	CC:	dbhole, jvanek, sbaiduzh, security-response-team, slawomir
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-02-02 15:21:01 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:
Bug Blocks:	1295699

Description Tomas Hoger 2016-01-15 12:11:01 UTC

Integer signedness issues were discovered in IndicRearrangementProcessor and IndicRearrangementProcessor2 in the ICU Layout Engine.  A specially crafted font file could cause an application using ICU to parse untrusted fonts to crash and, possibly, execute arbitrary code.

ICU code is embedded the 2D component in OpenJDK and used by FontManager.  An untrusted Java application or applet could use this flaw to execute arbitrary code with Java Virtual Machine privileges and bypass Java sandbox restrictions.

Comment 1 Tomas Hoger 2016-01-15 12:15:44 UTC

Upstream fix changes type of firstGlyph and lastGlyph from unsigned int to signed int, reverting part of the fix for CVE-2015-4844 (bug 1273318) applied as part of the previous Oct 2015 CPU:

http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/dbb4e2bdfa9e#l2.15

This change also impacts boundary checks added in the same commit, as they may be optimized out by compiler when signed types are used.

The above patch has not been applied to ICU yet, hence ICU packages are not affected.  Upstream ICU bug report for CVE-2015-4844:

http://bugs.icu-project.org/trac/ticket/12020

Comment 2 Tomas Hoger 2016-01-19 21:51:01 UTC

Public now via Oracle Critical Patch Update - January 2016.  Fixed in Oracle Java SE 6u111, 7u95, and 8u71.

External References:

http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html#AppendixJAVA

Comment 3 Tomas Hoger 2016-01-20 13:57:00 UTC

OpenJDK 8 upstream commit:

http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/f556d4c82ef1

Comment 4 errata-xmlrpc 2016-01-20 19:14:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0050 https://rhn.redhat.com/errata/RHSA-2016-0050.html

Comment 5 errata-xmlrpc 2016-01-20 19:32:40 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:0049 https://rhn.redhat.com/errata/RHSA-2016-0049.html

Comment 6 errata-xmlrpc 2016-01-21 11:23:14 UTC

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 6
  Oracle Java for Red Hat Enterprise Linux 5
  Oracle Java for Red Hat Enterprise Linux 7

Via RHSA-2016:0057 https://rhn.redhat.com/errata/RHSA-2016-0057.html

Comment 7 errata-xmlrpc 2016-01-21 11:39:48 UTC

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 6
  Oracle Java for Red Hat Enterprise Linux 5
  Oracle Java for Red Hat Enterprise Linux 7

Via RHSA-2016:0056 https://rhn.redhat.com/errata/RHSA-2016-0056.html

Comment 8 errata-xmlrpc 2016-01-21 11:41:05 UTC

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 6
  Oracle Java for Red Hat Enterprise Linux 7

Via RHSA-2016:0055 https://rhn.redhat.com/errata/RHSA-2016-0055.html

Comment 9 errata-xmlrpc 2016-01-21 11:42:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0053 https://rhn.redhat.com/errata/RHSA-2016-0053.html

Comment 10 errata-xmlrpc 2016-01-21 11:58:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 5

Via RHSA-2016:0054 https://rhn.redhat.com/errata/RHSA-2016-0054.html

Comment 11 errata-xmlrpc 2016-01-26 13:12:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 7

Via RHSA-2016:0067 https://rhn.redhat.com/errata/RHSA-2016-0067.html

Comment 12 errata-xmlrpc 2016-02-02 10:05:38 UTC

This issue has been addressed in the following products:

  Supplementary for Red Hat Enterprise Linux 6
  Supplementary for Red Hat Enterprise Linux 5

Via RHSA-2016:0101 https://rhn.redhat.com/errata/RHSA-2016-0101.html

Comment 13 errata-xmlrpc 2016-02-02 10:07:06 UTC

This issue has been addressed in the following products:

  Supplementary for Red Hat Enterprise Linux 5

Via RHSA-2016:0100 https://rhn.redhat.com/errata/RHSA-2016-0100.html

Comment 14 errata-xmlrpc 2016-02-02 13:39:49 UTC

This issue has been addressed in the following products:

  Supplementary for Red Hat Enterprise Linux 7

Via RHSA-2016:0098 https://rhn.redhat.com/errata/RHSA-2016-0098.html

Comment 15 errata-xmlrpc 2016-02-02 13:53:50 UTC

This issue has been addressed in the following products:

  Supplementary for Red Hat Enterprise Linux 7
  Supplementary for Red Hat Enterprise Linux 6

Via RHSA-2016:0099 https://rhn.redhat.com/errata/RHSA-2016-0099.html

Comment 17 errata-xmlrpc 2016-07-18 13:56:29 UTC

This issue has been addressed in the following products:

  Red Hat Satellite 5.6
  Red Hat Satellite 5.7

Via RHSA-2016:1430 https://access.redhat.com/errata/RHSA-2016:1430