Marc Schoenefeld has reported a vulnerability in Microsoft Java Virtual Machine, allowing Java applets originating from different domains to communicate.
The problem is that applets share a common class loader for the system classes, allowing sites to use public static fields for Cross-Site communication. This could potentially be exploited to cause information leakage.
This is a breach of sandbox restrictions.
The vulnerability has been reported in version 18.104.22.16810. Other versions may also be affected.
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Subject: Microsoft Java Virtual Machine Cross-Site Communication Vulnerability
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