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    Delphis Consulting Plc

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   Security Team Advisories

       [19/09/2000]



    securityteam@delphisplc.com

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



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Adv     :       DST2K0032

Title   :       Multiple Issues with Talentsoft WebPlus Application Server

Author  :       DCIST (securityteam@delphisplc.com)

O/S     :       Microsoft Windows Nt 2000 Professional (SP1) / Linux

Product :       Web+ Server Version: 4.6 Client-Server NT

(webpsvc.exe Build 539)

Web+ Monitor Version: 4.6 Client-Server NT (Build

14)

Web+ Client Version: 4.6 NT (Build 25)

Date    :       19/09/2000



I.    Description



II.   Solution



III.  Disclaimer





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I. Description

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



Delphis Consulting Internet Security Team (DCIST) discovered the following

vulnerability in Webplus under Windows NT.



Severity: low - Path revealing



It is possible to cause Webplus to reveal the physical path which it is

installed within. This is done by executing the CGI application and passing

a single .



example: http://127.0.0.1/cgi-bin/webplus.exe?script=.



This will respond with an error message detailing the physical path.



Severity: low - Internal IP address leakage



If your server is being NAT'd (i.e. located behind a firewall/load balancer)

it is possible to retrieve your internal IP address by passing the about

option to the cgi application.



example: http://127.0.0.1/cgi-bin/webplus.exe?about



Severity: medium - Source code viewing on NTFS partitions



It is possible to cause Webplus to reveal the source code of the WML files

which are located on NTFS partitions. This is done by appending the data

stream

you wish on to the WML file.



example: http://127.0.0.1/cgi-bin/webplus.exe?script=test.wml::$DATA



The danger here as the Delphis team have demonstrated is being able to

access

DSN information (datasource, table names, usernames & passwords). It is also

possible if the Script root has been set to the webroot to read the source

code of other script files (i.e. ASP).



example: http://127.0.0.1/cgi-bin/webplus.exe?script=test.asp::$DATA



II. Solution

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Vendor Status: Informed



Delphis are happy to announce that Talentsoft has a patch for the above

::$DATA issue. The following was information recieved from the vendor.



You require build 542 (to fully disable the parsing of ::$DATA requires

using a newly rebuilt webplus.dll in addition to the use of build 542 of

webpsvc.exe web+ server)).



If you have any issues obtaining this patch please contact Talentsoft

support.



III. Disclaimer

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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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