Note: This is an archival copy of Security Sun Alert 254570 as previously published on http://sunsolve.sun.com.|
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1020225.1.
Date of Resolved Release
Integer and buffer overflow vulnerabilities in the Java Runtime Environment (JRE) "unpack200" JAR unpacking utility may lead to escalation of privileges:
Integer and buffer overflow vulnerabilities in the Java Runtime Environment (JRE) 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, "regenrecht" working with the iDefense VCP (http://labs.idefense.com/vcp/) and Chris Evans of Google for bringing these issues to our attention.
2. Contributing Factors
These issues 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, see the following URL:
Java(TM) Platform SE 6 U11In this example, the version of the JRE that the browser uses is 6 Update 11.
There are no reliable symptoms that would indicate the described issues have been exploited.
There is no workaround for these issues. Please see the Resolution section below.
These issues are addressed in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:
JDK and JRE 6 Update 13:
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.
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Java Platform, Standard Edition 6 (Java SE 6)
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