Secunia

Some vulnerabilities have been reported in Sun Java, where some have unknown impacts and others can be exploited by malicious people to disclose sensitive information, bypass certain security restrictions, cause a DoS (Denial of Service), or compromise a user's system.

1) An error in the JRE SOCKS proxy implementation can be exploited by untrusted applets or untrusted Java Web Start applications to obtain the username of the user running the applet or application.

2) An error in the JRE proxy mechanism implementation can be exploited by untrusted applets or untrusted Java Web Start applications to obtain browser cookies.

3) An error in the JRE proxy mechanism implementation can be exploited by untrusted applets or untrusted Java Web Start applications to establish connections to normally restricted hosts.

4) An error in the Microsoft Visual Studio Active Template Library (ATL) used by the Java Web Start ActiveX control can be exploited to execute arbitrary code when a user visits a specially crafted web page.

For more information:
SA35967

5) An integer overflow error in JRE when unpacking applets and in Java Web Start applications using the "unpack200" JAR unpacking utility can be exploited to cause heap-based buffer overflows.

Successful exploitation may allow execution of arbitrary code.

6) An integer overflow error in JRE when parsing custom JPEG splash screen images for a WebStart application can be exploited to cause a heap-based buffer overflow via a specially crafted Java Web Start application.

Successful exploitation of this vulnerability may allow execution of arbitrary code.

7) An error in the JRE audio system can be exploited by an untrusted applet or Java Web Start application to access "java.lang.System" properties.

8) An error in old version of the JNLPAppletLauncher class can be exploited to write arbitrary files to a user's system via a specially crafted untrusted applet.

9) An error in JRE when parsing XML data can potentially be exploited by a remote client to cause a DoS.

Vulnerability #9 does not affect SDK and JRE 1.4.2 and 1.3.1.

Certain other errors with potential security impacts are mentioned in the vendor's advisories. Please see the vendor advisories for additional information and details on affected products and versions.

Solution
Update to a fixed version.
Further details available in Customer Area

Provided and/or discovered by
The vendor credits:
1, 2) Gregory Fleischer

5) An anonymous person via ZDI
* regenrecht, reported via iDefense

6) An anonymous person via ZDI.
7) Sami Koivu
8) John Heasman
9) Jukka Taimisto, Tero Rontti, and Rauli Kaksonen from the CROSS project at Codenomicon Ltd, reported via CERT-FI

Changelog
Further details available in Customer Area

Original Advisory
Sun Microsystems:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-263409-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-264648-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-263488-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-263428-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-263408-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-263490-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-263489-1
http://java.sun.com/javase/6/webnotes/6u15.html

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-09-049/
http://www.zerodayinitiative.com/advisories/ZDI-09-050/

iDefense:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=814

CERT-FI:
http://www.cert.fi/en/reports/2009/vulnerability2009085.html

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area