Vulnerability Alert

Oracle Java GSUB TTF Table LookupCount Remote Code Execution Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:29292
Version:4
First Published:2013 May 13 20:44 GMT
Last Published:2013 August 21 14:26 GMT
Port: Not available
CVE:CVE-2013-2384
BugTraq ID:59179
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.9
 
Version Summary:HP has released an additional security bulletin and updated software to address the Oracle Java GSUB TTF table LookupCount remote code execution vulnerability.
 
 
Description
A vulnerability in Oracle Java Runtime Environment (JRE) could allow an unauthenticated, remote attacker to execute arbitrary code on the system.

The vulnerability is due to insufficient validation of user-supplied input by the 2D sub-component of JRE while processing TTF files. An attacker could exploit this vulnerability by persuading a user to visit a crafted website that contains a malicious Java applet. Successful exploitation could allow the attacker to bypass sandbox protection and execute arbitrary code with the privileges of the user.

Oracle has confirmed the vulnerability and released software updates.
 
Warning Indicators
Following Oracle Java products are vulnerable:
  • JRE 7 Update 17 and prior
  • JRE 6 Update 43 and prior
  • JRE 5.0 Update 41 and prior
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a file to the user and may persuade the user to open the file using misleading language and instructions.

If the user holds elevated privileges, exploitation could result in complete compromise of the system.
 
Vendor Announcements
Oracle has released a security advisory at the following link: Oracle Java SE Critical Patch Update Advisory - April 2013

HP has released security bulletins c03809278 and c03898880 at the following links: HPSBUX02889 SSRT101252 and HPSBUX02922 SSRT101305

Red Hat has released security advisories at the following links: RHSA-2013-0751, RHSA-2013-0752, RHSA-2013-0757, RHSA-2013-0758, RHSA-2013-0770, and RHSA-2013:0855
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on a targeted system. A successful exploit could result in a complete compromise of the system.
 
Technical Information
The vulnerability exits when the fontmanager native component performs insufficient bounds checks on GSUB tables in user-supplied a True Type Font (TTF) file.

An unauthenticated, remote attacker could exploit the vulnerability by convincing a targeted user to open a malicious TTF file with overly large Lookupcount sum parameter. Processing this parameter may trigger a memory corruption error and the attacker could leverage the memory corruption error to execute arbitrary code with elevated privileges.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators may consider disabling JavaScript in the vulnerable applications.

Users should verify that unsolicited links are safe to follow.

Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.

Administrators are advised to monitor affected systems.
 
Patches/Software
Oracle has released patches for registered users at the following link: Oracle

CentOS packages can be updated using up2date or yum command.

HP has released updated software at the following links:
HP-UX B.11.11, B.11.23 and B.11.31
HP JDK and JRE version 6.0.19 or subsequent
HP JDK and JRE version 5.0.29 or subsequent
Red Hat has released updated software for registered subscribers at the following link: Red Hat Network

Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.
 
Alert History
 

Version 3, July 2, 2013, 2:37 PM: HP has released a security bulletin and updated software to address the Oracle Java GSUB TTF table LookupCount remote code execution vulnerability.

Version 2, May 23, 2013, 7:19 PM: Red Hat has released an additional security advisory and updated software to address the Oracle Java GSUB TTF table LookupCount remote code execution vulnerability.

Version 1, May 13, 2013, 8:44 PM: Oracle Java Runtime Environment contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Sun Microsystems, Inc.Java Runtime Environment (JRE) 5.0.0 Base, Update 1, Update 2, Update 3, Update 4, Update 5, Update 6, Update 7, Update 8, Update 9, Update 10, Update 11, Update 12, Update 13, Update 14, Update 15, Update 16, Update 17, Update 18, Update 19, Update 20, Update 21, Update 22, Update 23, Update 24, Update 25, Update 26, Update 27, Update 28, Update 29, Update 30, Update 31, Update 32, Update 33, Update 34, Update 35, Update 36, Update 37, Update 38, Update 39, Update 40, Update 41 | 6.0 Base, Update 1, Update 2, Update 3, Update 4, Update 5, Update 6, Update 7, Update 10, Update 11, Update 12, Update 13, Update 14, Update 15, Update 16, Update 17, Update 18, Update 19, Update 20, Update 21, Update 22, Update 23, Update 24, Update 25, Update 26, Update 27, Update 28, Update 29, Update 30, Update 31, Update 32, Update 33, Update 34, Update 35, .36, .37, .38, Update 39, Update 40, Update 41, Update 42, Update 43 | 7.0 Base, Update 1, Update 2, Update 3, Update 4, Update 5, Update 6, Update 7, Update 8, Update 9, Update 10, Update 11, Update 12, Update 13, Update 14, Update 15, Update 16, Update 17

Associated Products:
CentOS ProjectCentOS 5 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64, .3 i386, .3 x86_64, .4 i386, .4 x86_64, .5 i386, .5 x86_64 | 6 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64
HPHP Java Development Kit (JDK) 5.0.0 Base, Update 1, Update 2, Update 3, Update 4, Update 5, Update 6, Update 7, Update 8, Update 9, Update 10, Update 11, Update 12, Update 13, Update 14, Update 15, Update 16, Update 17, Update 18, Update 19, Update 20, Update 21, Update 22, Update 23, Update 24, Update 25, Update 26, Update 27, Update 28 | 6.0 .00, .01, .02, .03, .04, .05, .06, .07, .08, .09, .10, .11, .12, .13, .14, .15, .16, .17, .18
HPHP Java Runtime Environment (JRE) 5.0.0 Base, Update 1, Update 2, Update 3, Update 4, Update 5, Update 6, Update 7, Update 8, Update 9, Update 10, Update 11, Update 12, Update 13, Update 14, Update 15, Update 16, Update 17, Update 18, Update 19, Update 20, Update 21, Update 22, Update 23, Update 24, Update 25, Update 26, Update 27, Update 28 | 6.0 .00, .01, .02, .03, .04, .05, .06, .07, .08, .09, .10, .11, .12, .13, .14, .15, .16, .17, .18
HPHP-UX 11.11/11i Base | 11.23 Base | 11.31 Base
Red Hat, Inc.Red Hat Enterprise Linux 5 IA-32, IA-64, PPC, ppc64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server AUS 6.4 Base, IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop 5 IA-32, x86_64 | 6 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop Supplementary 5.0 IA-32, x86-64 | 6 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux EUS (Extended Update Support) 5.9.z Base, IA-32, IA-64, PPC, PPC-64, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux HPC Node 6 x86_64
Red Hat, Inc.Red Hat Enterprise Linux HPC Node Supplementary 6 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Long Life 5.9 Base, IA-32, IA-64, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server 6 IA-32, PPC, PPC 64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server EUS 6.4z Base, IA-32, x86_64, PPC, PPC64, s390, s390x
Red Hat, Inc.Red Hat Enterprise Linux Server Supplementary 6 IA-32, PPC, PPC 64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server Supplementary AUS 6.4 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server Supplementary EUS 6.4.z IA-32, ppc, ppc64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Workstation 6 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Workstation Supplementary 6 IA-32, x86_64
Red Hat, Inc.RHEL Supplementary 5 IA-32, IA-64, PPC, PPC64, S390, S390x, x86_64
Red Hat, Inc.RHEL Supplementary EUS 5.9.z IA-32, x86_64
Red Hat, Inc.RHEL Supplementary Long Life 5.9 IA-32, x86_64




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