Hi guys,
I have been puzzling with this all day, and I can't figure out why
this doesn't work.
I compiled "xsh.c" from the examples, and created the appropriate
config file. However, I do get a shell, but from the same user that is
logged in.
I even tried to modify the system call to just a simple "touch
test.txt", but this command is executed as the same user.
So I guess my problem is somewhere in the config file, but I don't
know what to modify. I used the "login" and "passwd", and I even tried
my own, where I just call pam_permit.so for every action, and even
though I am authenticated without a problem, the xsh script still
creates the file with the same user.
So instead of the regular source, I did (line 142 from examples/xsh.c):
/* this is always a really bad thing for security! */
retcode = system("touch /home/henk/test.txt");
if(retcode != PAM_SUCCESS) {
printf("Error code: %d\n", retcode);
}
After calling "./a.out henk" as root, this is the response:
==> called pam_start()
got: `Success'
==> called pam_set_item(PAM_RUSER)()
got: `Success'
==> called pam_set_item(PAM_RHOST)()
got: `Success'
==> called pam_set_item(PAM_RHOST)()
got: `Success'
Password:
==> called pam_authenticate()
got: `Success'
==> called pam_acct_mgmt()
got: `Success'
==> called pam_setcred()
got: `Success'
==> called pam_open_session()
got: `Success'
The user [henk] has been authenticated and `logged in'
==> called pam_close_session()
got: `Success'
==> called pam_setcred()
got: `Success'
==> called pam_end()
got: `Success'
However, the file is created as root.
This is my config script (from /etc/pam.d/passwd):
#%PAM-1.0
auth required pam_env.so
auth required pam_unix2.so
account required pam_unix2.so
password requisite pam_pwcheck.so cracklib
password optional pam_gnome_keyring.so use_authtok
password required pam_unix2.so use_authtok
session required pam_limits.so
session required pam_unix2.so
session optional pam_apparmor.so
session optional pam_umask.so
session optional pam_gnome_keyring.so auto_start only_if=gdm,lxdm
Can anyone help me out? What am I doing wrong?
With kind regards,
Henk te Sligte
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