[NT] MyProxy Firewall Bypassing

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  MyProxy Firewall Bypassing
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SUMMARY

"MyProxy helps dramatically accelerate your Internet connection, save your 
Internet costs and make your web surfing more enjoyable." It is possible 
to issue MyProxy a CONNECT command that will cause it to connect to any 
TCP port on machines the MyProxy has access to.

DETAILS

Vulnerable Systems:
 * MyProxy version 6.58

Example:
Proxy IP Address: 5.5.5.5
The Pop3 Server IP Address : 4.4.4.4
Connect with "telnet 5.5.5.5 8080" to the proxy and enter: CONNECT 
4.4.4.4:110 / HTTP/1.0

The response should be the POP3 server banner. Basically this allows you 
to connect to any TCP port on any machine the proxy can connect to.

Vendor Status:
Vendor was notified on 22/11/04
Vendor Response:
"Yes, but only users listed at the "Users" tab-sheet MyProxy's options can 
access MyProxy and use this feature."


ADDITIONAL INFORMATION

The information has been provided by  <mailto:gss_it@xxxxxxxxx> GSS IT.



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