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[Benjamin PREISS <b.preiss@xxxxxxxxxxxx>]

Public bug reported:

Hi,

I'm using Ubuntu server 13.10 on production environment for a Samba
share.

"map untrusted to domain = Yes" with "security = ADS" must allow any BOGUS/user to connect to a share by renaming the bogus domain name to the one defined on the "realm" option. On Samba 3.6.18 I can't connect using a bogus name :
  BOGUS/user    -> don't connect "NT_STATUS_LOGON_FAILURE"
  DOMAIN/user -> connect
  user                   -> connect

Log files can be provided if needed


# man smb.conf
       map untrusted to domain (G)

           If a client connects to smbd using an untrusted domain name, such as BOGUS\user, smbd replaces the BOGUS domain with it's SAM name before attempting to authenticate that user. In the case where
           smbd is acting as a PDC this will be DOMAIN\user. In the case where smbd is acting as a domain member server or a standalone server this will be WORKSTATION\user.

           In previous versions of Samba (pre 3.4), if smbd was acting as a domain member server, the BOGUS domain name would instead be replaced by the primary domain which smbd was a member of. In this
           case authentication would be deferred off to a DC using the credentials DOMAIN\user.

           When this parameter is set to yes smbd provides the legacy behavior of mapping untrusted domain names to the primary domain. When smbd is not acting as a domain member server, this parameter has
           no effect.

           Default: map untrusted to domain = no


# lsb_release -rd
Description:	Ubuntu 13.10
Release:	13.10

# apt-cache policy samba
samba:
  Installé : 2:3.6.18-1ubuntu3.1
  Candidat : 2:3.6.18-1ubuntu3.1
 Table de version :
 *** 2:3.6.18-1ubuntu3.1 0
        500 http://archive.ubuntu.com/ubuntu/ saucy-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ saucy-security/main amd64 Packages
        100 /var/lib/dpkg/status
     2:3.6.18-1ubuntu3 0
        500 http://archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: ads domain map samba to untrusted

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https://bugs.launchpad.net/bugs/1279226

Title:
  "map untrusted to domain = Yes" has no effect

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