bugtraq - Re: A short warning on the X11 Editres protocol

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Message-ID: <20050602100803.GA14767@var.cx>
Date: Thu, 2 Jun 2005 12:08:03 +0200
From: Frank v Waveren <fvw.bugtraq@....cx>
To: Florian Weimer <fw@...eb.enyo.de>
Cc: security-announce@...ts.enyo.de,
	full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: Re: A short warning on the X11 Editres protocol

On Tue, May 31, 2005 at 11:37:37PM +0200, Florian Weimer wrote:
> However, xterm is an Xt application and therefore speaks a
> long-forgotten protocol called Editres.  As a result, any Editres
> client (such as "editres") can instruct an xterm window to change its
> allowSendEvents setting.  After that, it's possible to send
> synthesized events to the xterm window and hijack the terminal.
And even if it weren't toggleable with editres, there's still the
XTEST extension which seems to be pretty omnipresent these days.
Basically, you shouldn't be mixing privileges in one X session (even
using the security extension it's generally something you want to
avoid, design-wise).


-- 
Frank v Waveren                                      Fingerprint: BDD7 D61E
fvw@[var.cx|stack.nl] ICQ#10074100                      5D39 CF05 4BFC F57A
Public key: hkp://wwwkeys.pgp.net/468D62C8              FA00 7D51 468D 62C8


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