Note: This is an archival copy of Security Sun Alert 263488 as previously published on http://sunsolve.sun.com.|
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1020712.1.
Date of Resolved Release
Integer Overflow Vulnerability in the Java Runtime Environment (JRE) "Unpack200" JAR Unpacking Utility May Lead to Escalation of Privileges
An integer overflow vulnerability in the Java Runtime Environment with unpacking applets and Java Web Start applications using the unpack200 JAR unpacking utility may allow an untrusted applet or application to escalate privileges. For example, an untrusted applet may grant itself permissions to read and write local files or execute local applications that are accessible to the user running the untrusted applet.
Sun acknowledges with thanks:
- An anonymous researcher working with the Zero Day Initiative (http://www.zerodayinitiative.com/) and TippingPoint (http://www.tippingpoint.com)
for bringing this issue to our attention.
This issue is referenced in the following document:
CVE-2009-2675 at http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2675
2. Contributing Factors
This issue can occur in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:
To determine the default version of the JRE that Internet Explorer uses, visit the URL:
To determine the default version of the JRE that Mozilla or Firefox browsers use, visit the URL "about:plugins".
The browser will display a page called "Installed plug-ins" which lists the version of the Java Plug-in such as the following:
Java(TM) Platform SE 6 U13
The above indicates that the version of JRE the browser uses is version 6 Update 13.
There are no predictable symptoms that would indicate the described issue has been exploited.
There is no workaround for this issue. Please see the Resolution section below.
This issue is addressed in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:
JDK and JRE 6 Update 15:
JRE 6 Update 15:
through the Java Update tool for Microsoft Windows users.
JDK 6 Update 15 for Solaris is available in the following patches:
JDK 5.0 Update 20 for Solaris is available in the following patches:
Note: When installing a new version of the product from a source other than a Solaris patch, it is recommended that the old affected versions be removed from your system. To remove old affected versions on the Windows platform, please see:
For more information on Security Sun Alerts, see 1009886.1.
Copyright 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.
10-Aug-2009: Update Impact section for CVE reference
Sun Java Standard Edition (Java SE)
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