[NT] MyProxy Firewall Bypassing

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To: list@securiteam.com
Date: 18 Aug 2005 14:54:39 +0200

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  MyProxy Firewall Bypassing
------------------------------------------------------------------------

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-*** MyProxy's options can
access MyProxy and use this feature."

ADDITIONAL INFORMATION

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

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