[NT] MFC ISAPI Framework Buffer Overflow (BadBlue PWS)

From: support@securiteam.com
Date: 07/12/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Fri, 12 Jul 2002 19:55:42 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  MFC ISAPI Framework Buffer Overflow (BadBlue PWS)
------------------------------------------------------------------------

SUMMARY

The MFC ISAPI framework is widely used to build ISAs that run on a
multitude of web servers.

It has been discovered that the framework relies on user-input values for
request member lengths, making it prone to a buffer overrun attack.

DETAILS

Vulnerable systems:
 * BadBlue PWS

The following malformed POST request will cause the PWS server to crash:
POST /ext.dll HTTP/1.0
Content-Length: 1

AAAAAAAAAAAA[...]

ADDITIONAL INFORMATION

The information has been provided by <mailto:mattmurphy@kc.rr.com>
Matthew Murphy.

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