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Insecure Library Loading
Not critical

Microsoft Java Virtual Machine Cross-Site Communication Vulnerability

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Description


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 5.0.0.3810. Other versions may also be affected.


Solution:
Use another Java implementation.

Provided and/or discovered by:
Marc Schoenefeld

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft Java Virtual Machine Cross-Site Communication Vulnerability

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