-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Class Loading Vulnerability in Sun Java (TM) Runtime Environment January 30, 2001 19:00 GMT Number L-032 ______________________________________________________________________________ PROBLEM: The Java (TM) Runtime Environment can fail to securely confine the activity of an untrusted Java class. In particular, an untrusted Java class might be able to call into a disallowed area. PLATFORM: Windows Production and Solaris(TM) Reference Releases JDK/JRE 1.2.2_004 or earlier JDK/JRE 1.2.1_003 or earlier JDK/JRE 1.1.8_002 or earlier JDK/JRE 1.1.7B_005 or earlier JDK/JRE 1.1.6_007 or earlier Solaris Production Releases JDK/JRE 1.2.2_05 or earlier JDK/JRE 1.2.1 JDK/JRE 1.1.8_10 or earlier JDK/JRE 1.1.7B JDK/JRE 1.1.6 Linux Production Release JDK/JRE 1.2.2_005 or earlier HotSpot(TM) 1.0 and 1.0.1 virtual machines DAMAGE: The untrusted Java class may get elevated privileges through its call to a disallowed class. SOLUTION: Upgrade to the latest JDK/JRE releases as directed. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. The details for taking advantage of the ASSESSMENT: security hole are not widely available. ______________________________________________________________________________ ________________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00199 Date: November 29, 2000 Cross-Ref: Title: Potential security issue in class loading ________________________________________________________________________________ The information contained in this Security Bulletin is provided "AS IS." Sun makes no warranties of any kind whatsoever with respect to the information contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY OF NON-INFRINGEMENT OR IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW. IN NO EVENT WILL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY ARISING OUT OF THE USE OF OR INABILITY TO USE THE INFORMATION CONTAINED IN THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. If any of the above provisions are held to be in violation of applicable law, void, or unenforceable in any jurisdiction, then such provisions are waived to the extent necessary for this disclaimer to be otherwise enforceable in such jurisdiction. ________________________________________________________________________________ 1. Background Under certain circumstances, the Java(TM) Runtime Environment may allow an untrusted Java class to call into a disallowed class. This is a potential security issue. This issue may or may not affect other vendors' Java implementations which are derived from Sun's Java Development Kit JDK(TM) source base. Sun has notified and made the remedy available to its Java licensees. To the best of Sun's knowledge, Netscape Navigator and Microsoft Internet Explorer are not exposed to this vulnerability. Sun recommends that you upgrade to the latest JDK/JRE releases listed in section 3 of this bulletin. 2. Affected Releases The following releases are affected: Windows Production and Solaris(TM) Reference Releases JDK/JRE 1.2.2_004 or earlier JDK/JRE 1.2.1_003 or earlier JDK/JRE 1.1.8_002 or earlier JDK/JRE 1.1.7B_005 or earlier JDK/JRE 1.1.6_007 or earlier Solaris Production Releases JDK/JRE 1.2.2_05 or earlier JDK/JRE 1.2.1 JDK/JRE 1.1.8_10 or earlier JDK/JRE 1.1.7B JDK/JRE 1.1.6 Linux Production Release JDK/JRE 1.2.2_005 or earlier Solaris Production releases JDK/JRE 1.2.1, 1.1.7B, and 1.1.6 should no longer be used. In addition, releases prior to JDK/JRE 1.1.6 for Windows or Solaris should no longer be used. Users of these releases should upgrade to a later release listed in Section 3. This vulnerability was fixed in Java 2 Standard Edition SDK v 1.3. The HotSpot(TM) 1.0 and 1.0.1 virtual machines are affected by this vulnerability. HotSpot 2.0 is not affected by this vulnerability. HotSpot 1.0 and 1.0.1 virtual machines should no longer be used. Users that cannot move to Java 2 Standard Edition SDK v 1.3 should revert to the Classic virtual machine in JDK/JRE 1.2.2_006 (Windows or Solaris reference). Those users wishing to take advantage of the performance of HotSpot 2.0 should migrate to Java 2 Standard Edition SDK v 1.3.0. 3. Binary Update Releases The following update releases are available in relation to this issue. Windows Production and Solaris Reference Releases JDK/JRE 1.2.2_006 http://java.sun.com/products/jdk/1.2/ JDK/JRE 1.2.1_004 http://java.sun.com/products/jdk/1.2.1/ JDK/JRE 1.1.8_005 http://java.sun.com/products/jdk/1.1/ JDK/JRE 1.1.7B_007 http://java.sun.com/products/jdk/1.1.7B/ JDK/JRE 1.1.6_009 http://java.sun.com/products/jdk/1.1.6/ Solaris Production Releases JDK/JRE 1.2.2_06 http://www.sun.com/software/solaris/java/download.html JDK/JRE 1.1.8_12 http://www.sun.com/software/solaris/java/archive.html Linux Production Release JDK/JRE 1.2.2_006 http://java.sun.com/products/jdk/1.2/download-linux.html _______________________________________________________________________________ APPENDICES A. Sun security bulletins are available at: http://sunsolve.sun.com/security B. Sun Security Coordination Team's PGP key is available at: http://sunsolve.sun.com/pgpkey.txt C. To report or inquire about a security problem with Sun software, contact one or more of the following: - Your local Sun answer centers - Your representative computer security response team, such as CERT - Sun Security Coordination Team. Send email to: security-alert@sun.com D. To receive information or subscribe to our CWS (Customer Warning System) mailing list, send email to: security-alert@sun.com with a subject line (not body) containing one of the following commands: Command Information Returned/Action Taken _______ _________________________________ help An explanation of how to get information key Sun Security Coordination Team's PGP key list A list of current security topics query [topic] The email is treated as an inquiry and is forwarded to the Security Coordination Team report [topic] The email is treated as a security report and is forwarded to the Security Coordination Team. Please encrypt sensitive mail using Sun Security Coordination Team's PGP key send topic A short status summary or bulletin. For example, to retrieve a Security Bulletin #00138, supply the following in the subject line (not body): send #138 subscribe Sender is added to our mailing list. To subscribe, supply the following in the subject line (not body): subscribe cws your-email-address Note that your-email-address should be substituted by your email address. unsubscribe Sender is removed from the CWS mailing list. ________________________________________________________________________________ Copyright 2000 Sun Microsystems, Inc. All rights reserved. Sun, Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries. This Security Bulletin may be reproduced and distributed, provided that this Security Bulletin is not modified in any way and is attributed to Sun Microsystems, Inc. and provided that such reproduction and distribution is performed for non-commercial purposes. _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Sun Microsystems, Inc. for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@llnl.gov Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ (or http://ciac.llnl.gov -- they're the same machine) Anonymous FTP: ftp.ciac.org (or ciac.llnl.gov -- they're the same machine) PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. 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