http://bugzilla.suse.com/show_bug.cgi?id=1170443
http://bugzilla.suse.com/show_bug.cgi?id=1170443#c12
Stanislav Brabec changed:
What |Removed |Added
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CC| |kukuk@suse.com
--- Comment #12 from Stanislav Brabec ---
Does your su binary have SUID flag?
"check pass; user unknown" does not come from su. It comes from PAM.
It is present in two places:
helper_verify_password(): if (pwd == NULL || salt == NULL)
_unix_verify_password()
"password check failed for user root" also comes from PAM: unix_chkpwd
You can try to debug option to the pam_unix.so line in
/etc/pam.d/common-password.
There was a su configuration parsing behavior fix several months ago. Your
configuration is the new default. Most users will not need to modify
(/usr)/etc/default/su, (/usr)/etc/login.defs is sufficient.
Did you any changes in (/usr)/etc/login.defs?
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