MS00-077: Denial-of-Service Attack on Port 1720 May Cause a Memory Leak in Conf.exe

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This article was previously published under Q299796

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SYMPTOMS

A port attack on port 1720, which is used by the Microsoft NetMeeting Remote Desktop Sharing (RDS) process, may cause a memory leak. When this occurs, Conf.exe consumes all available memory and 50 percent of the CPU usage.

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RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 (http://support.microsoft.com/kb/260910/EN-US/ ) How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date       Time    Version     Size     File name
   ----------------------------------------------------
   5/24/2001  01:45p  4.4.0.3385  392,976  Callcont.dll

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STATUS

Microsoft has confirmed that this problem may cause a degree of security vulnerability in Microsoft Windows 2000. This problem was first corrected in Windows 2000 Service Pack 3.

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