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Vulnerability Assessment Details

IIS 5.0 WebDav Memory Leakage

Vulnerability Assessment Summary
Check the presence of a Memory Leakage in the IIS 5 httpext.dll (WebDav).

Detailed Explanation for this Vulnerability Assessment

The WebDav extensions (httpext.dll) for Internet Information
Server 5.0 contains a flaw that may permit a malicious user to
consume all available memory on the target server by sending
many requests using the LOCK method associated to a non
existing filename.

This concern not only IIS but the entire system since the flaw can
potentially exhausts all system memory available.

Vulnerable systems: IIS 5.0 ( httpext.dll versions prior to 0.9.3940.21 )

Immune systems: IIS 5 SP2( httpext.dll version 0.9.3940.21)

Solution: Download Service Pack 2/hotfixes from Microsoft web
at http://windowsupdate.microsoft.com

Network Security Threat Level: High

Networks Security ID: 2736

Vulnerability Assessment Copyright: INTRANODE - 2001

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