[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20080305130408.GB21650@ngolde.de>
Date: Wed, 5 Mar 2008 14:04:08 +0100
From: Nico Golde <oss-security+ml@...lde.de>
To: oss-security@...ts.openwall.com
Subject: Re: request CVE id: insecure handling of DISPLAY in rxvt
Hi Matthieu,
* Matthieu Herrb <matthieu.herrb@...s.fr> [2008-03-05 12:54]:
> Nico Golde wrote:
> >Steve, can I get a CVE id for the following issue in rxvt?
> >"If the DISPLAY environment is not set, rxvt opens an xterm on :0, which on
> >some headless login-server means anyone can setup an fake X server waiting for
> >someone loggin in without X forwarding to start rxvt by some mistake or by
> >some program (thus without even noticing) and getting full shell access to
> >that other account."
> >This is Debian bug 469296[0].
> >It should be a good idea to check other terminal emulators as well.
> >[0] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=469296
>
> I don't understand how that's an issue with rxvt. If you "fix" the terminal
> emulator not to that, yo can still run rxvt -display :0 or env DISPLAY=:0 rxvt.
Sure but what's your point? It still looks different to me
if the user is forced to enable that or if it's done in the
background without him noticing it.
> But then I also don't understant what you mean by "setup an fake X server
> waiting for someone loggin in..."
He basically meant starting an X server on :0.
Cheers
Nico
--
Nico Golde - http://www.ngolde.de - nion@...ber.ccc.de - GPG: 0x73647CFF
For security reasons, all text in this mail is double-rot13 encrypted.
Content of type "application/pgp-signature" skipped
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
