Re: [Jailkit-users] sftp only jail problem (connection closed)

[Olivier Sessink]

Jordan Tomkinson wrote:
> I have followed the guide at 
> http://olivier.sessink.nl/jailkit/howtos_sftp_scp_only.html but have run 
> into this problem
>
> Contents of my jk_lsh.ini:
>
> address@hidden root]# cat /home/jail/etc/jailkit/jk_lsh.ini
> [myuser]
> paths = /usr/bin, /usr/lib/, /usr/libexec/openssh/
> executables = /usr/bin/scp, /usr/libexec/openssh/sftp-server
> devices = /dev/urandom, /dev/null

the section 'devices' is part of jk_init.ini and not jk_lsh.ini

> what happens when myuser logs in:
>
> address@hidden:~$ sftp address@hidden
> Connecting to server...
> address@hidden's password:
> Connection closed
>
>
> This is all that jk_socketd gives me:
> Dec 21 15:38:40 server jk_chrootsh[19580]: now entering jail /home/jail 
> for user myuser (503)
> Dec 21 15:38:40 server jk_lsh[19580]: jk_lsh version 2.10, started
>
> If i change /home/jail/etc/passwd from "/usr/sbin/jk_lsh" to "/bin/bash" 
> everything works fine, so I know the jail itself is set up correctly - 
> the problem has to be with jk_lsh somewhere.
>
> an strace of the jk_lsh process reveals:
>
> open("/dev/tty", O_RDWR|O_NOCTTY|O_NONBLOCK) = -1 ENOENT (No such file 
> or directory)
> writev(2, [{"*** glibc detected *** ", 23}, {"/usr/sbin/jk_lsh", 16}, 
> {": ", 2}, {"malloc(): memory corruption", 27}, {": 0x", 4}, 
> {"08ebb2e0", 8}, {" ***\n", 5}], 7) = 85
>
> I am at a loss here, any ideas?

can you send me a bit longer strace log (last 50 lines)? possiby with 
-s128 to get longer string sizes?

Olivier