Vladimir Kraljevic has reported a security issue in Windows, which can be exploited by malicious, local users to cause a DoS (Denial of Service).
The problem is that only a certain number of handles can be opened on a registry key. This can be exploited to prevent other users from logging on both locally and remotely via terminal services by opening a large amount of handles on the "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion" registry key and not closing them again.
Solution: Grant only trusted users access to affected systems.
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Subject: Windows Registry Key Locking Denial of Service
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