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AUSCERT External Security Bulletin Redistribution
ESB-2010.0148
A Security Vulnerability in Java Runtime Environment (JRE) With
Authenticating Users Through Kerberos May Lead to a Denial of Service (DoS)
12 February 2010
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AusCERT Security Bulletin Summary
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Product: Java Platform, Standard Edition 6 (Java SE 6)
Publisher: Sun Microsystems
Operating System: Linux variants
Solaris
Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-246346-1
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Article ID : 246346
Article Type : Sun Alert
Last reviewed : 2010-02-04
Audience : PUBLIC
Keywords :
Copyright Notice: Copyright 2009 Sun Microsystems, Inc. All Rights Reserved
A Security Vulnerability in Java Runtime Environment (JRE) With
Authenticating Users Through Kerberos May Lead to a Denial of Service (DoS)
Category : Security
Release Phase : Resolved
Bug Id : 6588160
Date of Resolved Release : 03-Dec-2008
Product : Java Platform, Standard Edition 6 (Java SE 6)
A security vulnerability in the Java Runtime Environment (JRE) with
authenticating users through Kerberos:
1. Impact
A security vulnerability in the Java Runtime Environment (JRE) with
authenticating users through Kerberos may lead to a Denial of Service
(DoS) to the system as a whole, due to excessive consumption of operating
system resources.
Sun acknowledges, with thanks, Jan Grant of Bristol University for bringing
this issue to our attention.
2. Contributing Factors
This issue can occur in the following Java SE and Java SE for Business
releases for Solaris, Windows and Linux:
* JDK and JRE 6 Update 10 or earlier
* JDK and JRE 5.0 Update 16 or earlier
* SDK and JRE 1.4.2_18 or earlier
Note: SDK and JRE 1.3.1 is not affected by this issue.
To determine the version of Java installed on a system, the following
command can be used:
% *java -version*
java version "1.5.0_14"
To determine the default version of the JRE that Internet Explorer uses:
1. Click "Tools" in the Menu Bar at the top of the browser
2. Select "Sun Java Console"
The first two lines in the console display the version of Java Plug-in and
JRE that Internet Explorer uses.
To determine the default version of the JRE that Mozilla or Firefox
browsers use, visit the URL "about:plugins".
The browser will display a page called "Installed plug-ins" which lists the
version of the Java Plug-in, as shown in the following example:
Java(TM) Plug-in 1.5.0_11-b03
(Indicating that the JRE version the browser uses is 1.5.0_11)
3. Symptoms
If the described issue occurs, the system that the JRE runs on may be
unresponsive.
4. Workaround
There is no workaround for this issue. Please see the Resolution section
below.
5. Resolution
This issue is addressed in the following Java SE and Java SE for Business
releases for Solaris, Windows and Linux:
* JDK and JRE 6 Update 11 or later
* JDK and JRE 5.0 Update 17 or later
* SDK and JRE 1.4.2_19 or later
Java SE releases are available at:
JDK 6 Update 11:
* http://java.sun.com/javase/downloads/index.jsp
JRE 6 Update 11:
* http://java.sun.com/javase/downloads/index.jsp
* http://java.com/
and through the Java Update tool for Microsoft Windows users.
JDK 6 Update 11 is also available for Solaris in the following patches:
* Java SE 6: update 11 (as delivered in patch 125136-12)
* Java SE 6: update 11 (as delivered in patch 125137-12 (64bit))
* Java SE 6_x86: update 11 (as delivered in patch 125138-12)
* Java SE 6_x86: update 11 (as delivered in patch 125139-12 (64bit))
JDK and JRE 5.0 Update 17:
* http://java.sun.com/javase/downloads/index_jdk5.jsp
JDK 5.0 Update 17 is also available for Solaris in the following patches:
* J2SE 5.0: update 17 (as delivered in patch 118666-18)
* J2SE 5.0: update 17 (as delivered in patch 118667-18 (64bit))
* J2SE 5.0_x86: update 17 (as delivered in patch 118668-18)
* J2SE 5.0_x86: update 17 (as delivered in patch 118669-18 (64bit))
SDK and JRE 1.4.2_19:
* http://java.sun.com/j2se/1.4.2/download.html
Java SE for Business Releases:
* http://www.sun.com/software/javaseforbusiness/getit_download.jsp
Note 1: Java SE releases SDK and JRE 1.4.2 have completed the Sun End of
Service Life (EOSL) process. Sun recommends that users upgrade to the
latest Java SE release. Customers interested in continuing to receive
critical fixes on SDK and JRE 1.4.2 are encouraged to migrate to Java
SE for Business.
Note 2: When installing a new version of the product from a source other
than a Solaris patch, it is recommended that the old affected versions be
removed from your system. To remove old affected versions on the Windows
platform, please see:
* http://java.com/en/download/help/uninstall_java.xml
For more information on Security Sun Alerts, see Technical Instruction
ID 213557.
This Sun Alert notification is being provided to you on an "AS IS" basis.
This Sun Alert notification may contain information provided by third
parties. The issues described in this Sun Alert notification may or may
not impact your system(s). Sun makes no representations, warranties, or
guarantees as to the information contained herein. ANY AND ALL WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT,
ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN
SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE,
OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE
INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun
proprietary and confidential information. It is being provided to you
pursuant to the provisions of your agreement to purchase services from Sun,
or, if you do not have such an agreement, the Sun.com Terms of Use. This
Sun Alert notification may only be used for the purposes contemplated by
these agreements.
Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle,
Santa Clara, CA 95054 U.S.A. All rights reserved.
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