Date: Fri, 28 Mar 2008 01:22:33 +0100 From: Nico Golde <oss-security+ml@...lde.de> To: oss-security@...ts.openwall.com Subject: Re: was: SA29489 CenterIM URL handling flaw Hi Steven, * Steven M. Christey <coley@...us.mitre.org> [2008-03-28 00:01]: > On Tue, 25 Mar 2008, Nico Golde wrote: > > * Nico Golde <oss-security+ml@...lde.de> [2008-03-25 16:25]: > > > * Lubomir Kundrak <lkundrak@...hat.com> [2008-03-24 15:08]: [...] > > > That's partly true. While centerim has no special URL > > > handler to handle incoming urls it does provide the ability > > > to list urls in a message by pressing F2. If you press enter > > > on one of these urls it tries to open it in an external > > > browser and executes the other commands as well. > > This is the kind of situation that CVE adopted the "user-assisted" term > for: the user assists the attacker in his/her own demise. makes sense. > > > You see the commands in the URL however so I think the > > > impact of this is like sending someone a message with > > > "please type rm -rf ~ in your shell" so the secunia rating > > > is a bit beyond the actual impact. > > Is the URL still encoded at the time it is viewed? if so, then I don't > expect a typical user to notice this equivalent of "rm -rf *": > > %72%6D%20%2D%72%66%20%2A > > and that's part of the "smell test" for user-assisted issues. Nope it won't be encoded. Otherwise I would agree that a decoding hex is too much for a user :) Kind regards 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
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