linux-kernel - Re: ext3 hacked filesystem (by debian exim4 exploit) available for analysis and bugreporting

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Message-ID: <20110729195904.GC1720@ucw.cz>
Date:	Fri, 29 Jul 2011 21:59:04 +0200
From:	Pavel Machek <pavel@....cz>
To:	Luke Kenneth Casson Leighton <lkcl@...l.net>
Cc:	Matthias Schniedermeyer <ms@...d.de>, linux-kernel@...r.kernel.org
Subject: Re: ext3 hacked filesystem (by debian exim4 exploit) available for
 analysis and bugreporting

On Mon 2011-07-25 22:08:24, Luke Kenneth Casson Leighton wrote:
> On Mon, Jul 25, 2011 at 2:45 PM, Matthias Schniedermeyer <ms@...d.de> wrote:
> > On 25.07.2011 13:08, Luke Kenneth Casson Leighton wrote:
> >> folks, hi,
> >>
> >> apart from anything, files which cannot be deleted (and cannot be
> >> detected as "corrupted" by fsck.ext3) is pretty damn serious.
> >
> > You did try lsattr and checked that the files aren't 'immutable'?
> 
>  i didn't! :)  didn't know about (but should have guessed) ext3
> attributes.  they are indeed - thank you matthias.
> 
> root@...etbaby:/mnt/horsebox/tmp3# lsattr *
> ----ia------------- bin3/kill
> ----ia------------- bin3/ps
> ----ia------------- c.pl
> ----ia------------- e.conf
> ----ia------------- sbin3/sysctl
> ----ia------------- usrbin3/uptime
> ----ia------------- usrbin3/tload
> ----ia------------- usrbin3/free
> ----ia------------- usrbin3/top
> ----ia------------- usrbin3/vmstat
> ----ia------------- usrbin3/watch
> ----ia------------- usrbin3/skill
> ----ia------------- usrbin3/pmap
> ----ia------------- usrbin3/pgrep
> ----ia------------- usrbin3/slabtop
> ----ia------------- usrbin3/pwdx
> ----ia------------- usrbin3/snice
> ----ia------------- usrbin3/pkill
> ----ia------------- usrbin3/w
> 
> so - looks like it's not as bad as i thought.

Should ls -l be moddified to show something when file has immutable
(and friends) set?
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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