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Gentoo Linux Security Advisory GLSA 200411-38 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: Sun and Blackdown Java: Applet privilege escalation |
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Date: November 29, 2004 |
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Bugs: #72172, #72221 |
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ID: 200411-38 |
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|
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Synopsis |
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======== |
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|
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The Java plug-in security in Sun and Blackdown Java environments can be |
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bypassed to access arbitrary packages, allowing untrusted Java applets |
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to perform unrestricted actions on the host system. |
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|
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Background |
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========== |
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|
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Sun and Blackdown both provide implementations of Java Development Kits |
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(JDK) and Java Runtime Environments (JRE). All these implementations |
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provide a Java plug-in that can be used to execute Java applets in a |
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restricted environment for web browsers. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 dev-java/sun-jdk < 1.4.2.06 >= 1.4.2.06 |
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2 dev-java/sun-jre-bin < 1.4.2.06 >= 1.4.2.06 |
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3 dev-java/blackdown-jdk < 1.4.2.01 >= 1.4.2.01 |
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4 dev-java/blackdown-jre < 1.4.2.01 >= 1.4.2.01 |
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------------------------------------------------------------------- |
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# Package 1 [dev-java/sun-jdk] only applies to x86 and AMD64 |
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users. |
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# Package 2 [dev-java/sun-jre-bin] only applies to x86 and AMD64 |
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users. |
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# Package 3 [dev-java/blackdown-jdk] only applies to x86 and |
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AMD64 users. |
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# Package 4 [dev-java/blackdown-jre] only applies to x86 and |
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AMD64 users. |
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------------------------------------------------------------------- |
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4 affected packages; please see the notes above... |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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All Java plug-ins are subject to a vulnerability allowing unrestricted |
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Java package access. |
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|
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Impact |
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====== |
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|
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A remote attacker could embed a malicious Java applet in a web page and |
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entice a victim to view it. This applet can then bypass security |
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restrictions and execute any command or access any file with the rights |
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of the user running the web browser. |
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|
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Workaround |
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========== |
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|
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As a workaround you could disable Java applets on your web browser. |
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|
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Resolution |
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========== |
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All Sun JDK users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-java/sun-jdk-1.4.2.06" |
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|
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All Sun JRE users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-java/sun-jre-bin-1.4.2.06" |
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|
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All Blackdown JDK users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-java/blackdown-jdk-1.4.2.01" |
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|
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All Blackdown JRE users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-java/blackdown-jre-1.4.2.01" |
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|
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Note: You should unmerge all vulnerable versions to be fully protected. |
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|
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References |
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========== |
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|
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[ 1 ] iDEFENSE Security Advisory 11.22.04 |
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http://www.idefense.com/application/poi/display?id=158&type=vulnerabilities |
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[ 2 ] CAN-2004-1029 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1029 |
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[ 3 ] Blackdown Security Advisory 2004-01 |
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http://www.blackdown.org/java-linux/java2-status/security/Blackdown-SA-2004-01.txt |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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|
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http://security.gentoo.org/glsa/glsa-200411-38.xml |
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|
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Concerns? |
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========= |
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|
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2004 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.0 |