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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

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Vulnerability Assessment Details

Microsoft Frontpage dvwssr.dll backdoor

Vulnerability Assessment Summary
Searches for the existence of /_vti_bin/_vti_aut/dvwssr.dll

Detailed Explanation for this Vulnerability Assessment

The dll '/_vti_bin/_vti_aut/dvwssr.dll' seems to be present.

This dll contains a bug which permits anyone with
authoring web permissions on this system to alter
the files of other users.

In addition to this, this file is subject to a buffer overflow
which permits anyone to execute arbitrary commands on the
server and/or disable it

Solution : delete /_vti_bin/_vti_aut/dvwssr.dll
Network Security Threat Level: High
See also : http://www.wiretrip.net/rfp/p/doc.asp?id=45&iface=1

Networks Security ID: 1109

Vulnerability Assessment Copyright: This script is Copyright (C) 2000 Renaud Deraison

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