Hi list,
I have a strange problem on one of my debian squeeze boxes. when I try
to become root (or any other local user), su fails with
su: Authentication failure
and no, the password is correct :)
In the auth.log I see
unix_chkpwd[4941]: could not obtain user info (root)
If I try to su to an LDAP-user, su fails with
setgid: Operation not permitted
and I see again the "unix_chkpwd" message in the auth.log.
It seems there might be something wrong with the suid mechanism, but:
* su is running as root
* sudo works without problems, i.e. I can do all of the above with
sudo su [username]
without problems.
My best guess is, that the problem is with my pam-configuration, but I
have a lenny box with exactly the same pam-config that runs without
problems.
So any hints where to start looking are greatly appreciated.
cheers,
Hp
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