libpam-smbpass breaks sudo

[Jack Coulter]

Release: Jaunty

Since a recent upgrade (around the 16th of March), sudo has been broken. Entering the correct password causes sudo to simply exit and not run the command, it was found that this could be fixed by commenting/removing the line

"auth optional pam_smbpass.so migrate"

in /etc/pam.d/common-auth

If the above line is present and not commented out, sudo or even su, will not work.

[Thierry Carrez (ttx)]

Thanks for reporting this bug !

Is there anything in the system logs (like a segfault reported in sudo ?)
Do you have a /var/lib/samba directory ?
Anything weird in the /var/lib/samba/*.tdb files (secrets.tdb in particular), like text log entries in the middle of the binary file ?

[Jack Coulter (jscinoz)]

No sudo segfaults, /var/lib/samba exists. Although /var/lib/samba/secrets.tdb does appear to be messed up, it is mostly binary data but does contain these lines:

Unable to open tdb '/var/lib/samba/group_mapping.ldb'
Failed to connect to '/var/lib/samba/group_mapping.ldb'
ltdb: tdb((null)): tdb_open_ex: could not open file /var/lib/samba/group_mappin$
Unable to open tdb '/var/lib/samba/group_mapping.ldb'
Failed to connect to '/var/lib/samba/group_mapping.ldb