bugtraq - Re: Linux VNC evil client patch

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Message-ID: <20060624083800.23383.qmail@securityfocus.com>
Date: 24 Jun 2006 08:38:00 -0000
From: embyte@...lab.it
To: bugtraq@...urityfocus.com
Subject: Re: Linux VNC evil client patch - BID 17978

Moreover the vulnerability seems to be exploitable only by client RFB-3.8 [1] compliant, which means VNC4 (i.e. vnc4-4.1.1+X4.3.0 for linux). VNC3 for Linux and Windows are RFB-3.3.
This is because the new protocol version implements a different authentication handshake procedure. In fact attack doesn't work neither patching old clients, neither using them with the metasploit plugin realvnc_41_bypass.

That's all folks.
embyte

[1] Remote Frame Buffer protocol, http://realvnc.com/docs/rfbproto.pdf