Class Loading Vulnerability in Sun Java (TM) Runtime Environment
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CIAC INFORMATION BULLETIN
L-032: Class Loading Vulnerability in Sun Java (TM) Runtime Environment
January 30, 2001 21:00 GMT
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,
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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
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- Your local Sun answer centers
- Your representative computer security response team, such as CERT
- Sun Security Coordination Team. Send email to:
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send #138
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Note that your-email-address should be substituted
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________________________________________________________________________________
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
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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 services are available to DOE, DOE Contractors, and the NIH. CIAC
can be contacted at:
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(same machine -- either one will work)
Anonymous FTP: ftp.ciac.org
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UCRL-MI-119788
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