OSEC

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Subject: DST2K0028: DoS in FUR HTTP Server v1.0b
From: Security Team (SecurityTeamDELPHISPLC.COM)
Date: Thu Sep 14 2000 - 11:32:48 CDT


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                            Delphis Consulting Plc
============================================================================

                           Security Team Advisories
                               [12/09/2000]

                            securityteamdelphisplc.com
                  [http://www.delphisplc.com/thinking/whitepapers/]

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Adv : DST2K0028
Title : DoS in FUR HTTP Server v1.0b
Author : DCIST (securityteamdelphisplc.com)
O/S : Microsoft Windows Nt 2000 Workstation (SP1)
Product : FUR HTTP Server v1.0b
Date : 12/09/2000

I. Description

II. Solution

III. Disclaimer

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I. Description
============================================================================

Vendor URL: http://www.fastream.com/

Delphis Consulting Internet Security Team (DCIST) discovered the following
vulnerability in FUR HTTP Server under Windows NT.

Severity: medium

It is possible to cause FUR Http server crash with a invalid procedure call.

This is done by connecting to port 80 upon which FUR listens on and sending

3k of DATA as a GET string. This will cause the HTTP server to crash.

II. Solution
============================================================================

Vendor Status: Informed

Currently there is no know solution to this problem. Delphis Internet
Security team would advise users of this product to perform one of two
actions.

a) Restrict the IP addresses which are able to connect to your machine by
 the use of a Firewall, Router ACL or Microsoft TCP/IP advanced settings.

b) Use another vendors HTTP daemon as a temporary measure until this has
been
 resolved.

III. Disclaimer
============================================================================
THE INFORMATION CONTAINED IN THIS ADVISORY IS BELIEVED TO BE ACCURATE AT
THE TIME OF PRINTING, BUT NO REPRESENTATION OR WARRANTY IS GIVEN, EXPRESS OR
IMPLIED, AS TO ITS ACCURACY OR COMPLETENESS. NEITHER THE AUTHOR NOR THE
PUBLISHER ACCEPTS ANY LIABILITY WHATSOEVER FOR ANY DIRECT, INDIRECT OR
CONSEQUENTIAL LOSS OR DAMAGE ARISING IN ANY WAY FROM ANY USE OF, OR RELIANCE
PLACED ON, THIS INFORMATION FOR ANY PURPOSE.
============================================================================
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be personal to the author and may not necessarily reflect the opinions of
Delphis

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