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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/