‘Sun Java Runtime Environment Mutable InetAddress Socket Policy Violation Vulnerability’


This vulnerability allows remote attackers to violate security policies on vulnerable installations of Sun Java Runtime.’


‘The information has been provided by Sami Koivu.
The original article can be found at: http://www.zerodayinitiative.com/advisories/ZDI-10-055/


Vulnerable Systems:
Sun Microsystems Java Runtime Environment (JRE)

User interaction is required to exploit this vulnerability in that the target must run a malicious applet.

The specific flaw allows malicious applets to connect to network addresses other than the originating applet and client IPs. A handcrafted applet can override compile time checks to prevent compilation of a mutable InetAddress subclass. This results in the ability to circumvent the Applet SecurityManager restictions.

Patch Availability:
Sun Microsystems has issued an update to correct this vulnerability. More details can be found at:

CVE Information:

Disclosure Timeline:
2009-10-21 – Vulnerability reported to vendor
2010-04-05 – Coordinated public release of advisory’

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