Note: This is an archival copy of Security Sun Alert 201519 as previously published on http://sunsolve.sun.com.|
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1001134.1.
Java 2 Platform, Standard Edition
Date of Workaround Release
Date of Resolved Release
Security Vulnerability in Java Runtime Environment With Applet Caching May Allow Network Access Restrictions to be Circumvented
A vulnerability in the Java Runtime Environment (JRE) with applet caching may allow an untrusted applet that is downloaded from a malicious website to make network connections to network services on machines other than the one that the applet was downloaded from. This may allow network resources (such as web pages) and vulnerabilities (that exist on these network services) which are not otherwise normally accessible to be accessed or exploited.
Sun acknowledges with thanks, Billy Rios for bringing this issue to our attention.
This issue has been reported at:
2. Contributing Factors
This issue can occur in the following releases (for Windows, Solaris, and Linux):
To determine the default version of the JRE that Internet Explorer uses:
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) Plug-in 1.5.0_11-b03
The above example indicates that the version of the JRE that the browser uses is 1.5.0_11.
There are no predictable symptoms that would indicate that the above issue is being exploited.
To mitigate against DNS rebinding attacks, sites can remove internal IP addresses in DNS lookup results from external DNS servers. This can be done by either filtering such packets at the firewall or by modifying the DNS servers used by clients inside the firewall.
Sun has included changes that perform additional hostname matching using DNS reverse mapping data to mitigate these issues in the following releases. (We are working with industry partners to more fully address these issues and will include additional improvements in later update releases.)
Mitigations are included in the following releases (for Windows, Solaris and Linux):
and is included in the following release (for Windows and Solaris 8):
JDK and JRE 6 Update 3 is available for download at:
JDK 6 Update 3 for Solaris is available in the following patches:
JDK and JRE 5.0 Update 13 is available for download at:
JDK 5.0 Update 13 for Solaris is available in the following patches:
SDK and JRE 1.4.2_16 is available for download at:
SDK and JRE 1.3.1 for Solaris 8 is available for download at:
SDK and JRE 1.3.1 has completed the Sun End of Life (EOL) process and is only supported for customers with Solaris 8 and Vintage Support Offering support contracts (see http://java.sun.com/j2se/1.3/download.html). Sun strongly recommends that users upgrade to the latest releases.
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 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.
09-Oct-2007: Updated Resolution Section
22-Oct-2007: Updated Resolution Section
05-Sep-2008: No further updates, republish as Resolved
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