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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
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