Hello All,

This post might be interesting for those concerned about the
state of Oracle's Java SE security.

We have successfully confirmed that a complete Java security
sandbox bypass can be still gained under the recent version
of Java 7 Update 11 [1] (JRE version 1.7.0_11-b21).

MBeanInstantiator bug (or rather a lack of a fix for it [2][3])
turned out to be quite inspirational for us. However, instead
of relying on this particular bug, we have decided to dig our
own issues. As a result, two new security vulnerabilities (51
and 52) were spotted in a recent version of Java SE 7 code and
they were reported to Oracle today [4] (along with a working
Proof of Concept code).

Thank you.

Best Regards
Adam Gowdiak

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Security Explorations
http://www.security-explorations.com
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References:
References:
[1] Oracle Security Alert for CVE-2013-0422
 
http://www.oracle.com/technetwork/topics/security/alert-cve-2013-0422-1896849.html
[2] Java 7 Update 11 Addresses the Flaw Partly Fixed in October 2012, 
Experts Say
 
http://news.softpedia.com/news/Java-7-Update-11-Addresses-the-Flaw-Partly-Fixed-in-October-2012-Experts-Say-320792.shtml
[3] Confirmed: Java only fixed one of the two bugs
 
http://immunityproducts.blogspot.com.ar/2013/01/confirmed-java-only-fixed-one-of-two.html
[4] SE-2012-01 Vendors status
     http://www.security-explorations.com/en/SE-2012-01-status.html