A security update for Sun and Blackdown Java is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200411-38
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http://security.gentoo.org/
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Severity: Normal
Title: Sun and Blackdown Java: Applet privilege escalation
Date: November 29, 2004
Bugs: #72172, #72221
ID: 200411-38

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Synopsis
=======

The Java plug-in security in Sun and Blackdown Java environments can be bypassed to access arbitrary packages, allowing untrusted Java applets to perform unrestricted actions on the host system.



Background
=========

Sun and Blackdown both provide implementations of Java Development Kits (JDK) and Java Runtime Environments (JRE). All these implementations provide a Java plug-in that can be used to execute Java applets in a restricted environment for web browsers.

Affected packages
================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-java/sun-jdk < 1.4.2.06 >= 1.4.2.06
2 dev-java/sun-jre-bin < 1.4.2.06 >= 1.4.2.06
3 dev-java/blackdown-jdk < 1.4.2.01 >= 1.4.2.01
4 dev-java/blackdown-jre < 1.4.2.01 >= 1.4.2.01
-------------------------------------------------------------------
# Package 1 [dev-java/sun-jdk] only applies to x86 and AMD64
users.
# Package 2 [dev-java/sun-jre-bin] only applies to x86 and AMD64
users.
# Package 3 [dev-java/blackdown-jdk] only applies to x86 and
AMD64 users.
# Package 4 [dev-java/blackdown-jre] only applies to x86 and
AMD64 users.
-------------------------------------------------------------------
4 affected packages; please see the notes above...
-------------------------------------------------------------------

Description
==========

All Java plug-ins are subject to a vulnerability allowing unrestricted Java package access.

Impact
=====

A remote attacker could embed a malicious Java applet in a web page and entice a victim to view it. This applet can then bypass security restrictions and execute any command or access any file with the rights of the user running the web browser.

Workaround
=========

As a workaround you could disable Java applets on your web browser.

Resolution
=========

All Sun JDK users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-java/sun-jdk-1.4.2.06"

All Sun JRE users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-java/sun-jre-bin-1.4.2.06"

All Blackdown JDK users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-java/blackdown-jdk-1.4.2.01"

All Blackdown JRE users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-java/blackdown-jre-1.4.2.01"

Note: You should unmerge all vulnerable versions to be fully protected.

References
=========

[ 1 ] iDEFENSE Security Advisory 11.22.04
http://www.idefense.com/application/poi/display?id=158&type=vulnerabilities
[ 2 ] CAN-2004-1029
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1029
[ 3 ] Blackdown Security Advisory 2004-01
http://www.blackdown.org/java-linux/java2-status/security/Blackdown-SA-2004-01.txt

Availability
===========

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200411-38.xml

Concerns?
========

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.

License
======

Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s).

The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0