Bug? Jailkit / chroot crashed server

Hi,
I just want wo point on a serious issue that probably has to do with jailkit aund ISPConfig 3. I found a thread on another forum which describes the problem very clearly (I think this board is the correct one).

Source: http://ubuntuforums.org/showthread.php?p=7954438

I have done exactly the same and got the same problem. My server iss running with Debian Lenny and ISPConfig 3.0.1.4...

Would be glad if anyone can help me on the issue. I still have access on my files through a rescue system.

 

Yup i can confirm the issue. To me it happened on Ubuntu 8.04 with the latest jailkit and ISPConfig 3.0.13. The strange thing is it happened when i tried to ( add succeeded ) add a shell user with username. The client name was default, and in the field for the shell username i wrote nothing and it still accepted it, then the problems described above appeared.

 

Solution

Hi guys, it's my thread =)

It wasn't the ISPConfig but default Jailkit configuration.
You can find a simple solution in the same thread:
http://ubuntuforums.org/showthread.php?p=7954438
Cheers!
rozwell

p.s.
I'll send a message to Jailkit author to draw attention on this bug(?).

 

I have the same problem:

system can't boot: won't find /sbin/init

can't chroot to system with rescue cd: /bin/bash not found

Though all files and libs are there. Jailkit/ISPConfig messed up my hole system. Does anybody have a working solution?

Regards

 

Hi, I did the following:

I followed the "lenny ispconfig perfect server" tutorial, did all the steps except installing jailkit. That was 2 weeks ago. Yesterday I installed jailkit 2.8 from source. After that, I created a SSH-User with ISPConfig and selected jailkit.
I was logged in as root via SSH, but after the ISPConfig Cron ran, I was not able to execute any command, "ANY-COMMAND not found".
Rebooting doesn't work, /sbin/init not found.

CHROOT at rescue system doesn't work: /bin/bash not found.
But /bin/bash and all libs are existant on rescue and crashed system.

chroot: cannot run command `/bin/bash': No such file or directory

/etc/passwd

Code:

root:x:0:
daemon:x:1:
bin:x:2:
sys:x:3:

SNIP

ssh:x:103:
ntp:x:104:
mysql:x:105:
ssl-cert:x:106:postgres
postfix:x:107:
postdrop:x:108:
clamav:x:109:
amavis:x:110:clamav
vmail:x:5000:
getmail:x:5001:
sshusers:x:5002:web1,web2,web3,web4,web5,web7,web8,web9,web10,web11,web13,web15,web17,web19,web23,web25
ispconfig:x:5003:www-data
client0:x:5004:www-data
client3:x:5005:www-data
client1:x:5006:www-data
postgres:x:111:
lm_crawler:x:5014:
client4:x:5015:www-data
client5:x:5016:www-data

/etc/passwd

Code:

root:x:0:0:root:/root:/bin/sh
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh
sync:x:4:65534:sync:/bin:/bin/sync

SNIP

getmail:x:5001:5001::/etc/getmail:/bin/sh
ispconfig:x:5002:5003::/usr/local/ispconfig:/bin/sh
web1:x:5003:5006::/var/www/clients/client1/web1:/bin/false
web2:x:5004:5006::/var/www/clients/client1/web2:/bin/false

 

Hi till,

as I already said, chroot to crashed system is not possible.

root@rescue / # chroot /mnt/
chroot: cannot run command `/bin/bash': No such file or directory

I did a strace, I guess this is the problem:

execve("/bin/bash", ["/bin/bash", "-i"], [/* 18 vars */]) = -1 ENOENT (No such file or directory)

But /bin/bash and all libs exist on crashed system.

Anyway, thats the output of export after chroot crashing:

Code:

declare -x HOME="/root"
declare -x LANG="en_US.ISO-8859-15"
declare -x LOGNAME="root"
declare -x LS_COLORS="no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.svgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:"
declare -x LS_OPTIONS="--color=auto -h"
declare -x MAIL="/var/mail/root"
declare -x OLDPWD="/mnt/var"
declare -x PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
declare -x PS1="\\[\\033[01;31m\\]\\u\\[\\033[01;33m\\]@\\[\\033[01;32m\\]\\h \\[\\033[01;33m\\]\\w \\[\\033[01;35m\\]\\\$ \\[\\033[00m\\]"
declare -x PWD="/mnt"
declare -x SHELL="/bin/bash"
declare -x SHLVL="1"
declare -x SSH_CLIENT="XXX 22"
declare -x SSH_CONNECTION="XXX 22"
declare -x SSH_TTY="/dev/pts/0"
declare -x TERM="xterm"
declare -x USER="root"

 

I used JailKit 2.8

/bin/bash and /bin/sh were files, no symlinks

 

It is 64 bit.

All files and all symlinks where correct.

I'm currently reinstalling the server because we need it so much, could not wait any longer, but I still have the HD Dump.


file bash

Code:

bash: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.8, stripped

static:~/rescue_backup/rescue/bin# ldd bash

Code:

static:~/rescue_backup/rescue/bin# ldd bash
        linux-vdso.so.1 =>  (0x00007fffb61fe000)
        libncurses.so.5 => /lib/libncurses.so.5 (0x00007f5aadc8c000)
        libdl.so.2 => /lib/libdl.so.2 (0x00007f5aada88000)
        libc.so.6 => /lib/libc.so.6 (0x00007f5aad735000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f5aadecb000)

 

Thanks, i will test this on a virtual machine soon.

 

is new version

14-10-2009: Jailkit 2.9 released.

http://olivier.sessink.nl/jailkit/index.html#news