RHBA-2014:1212 - Bug Fix Advisory

Topic

Updated samba3x packages that fix several bugs and add various enhancements are
now available for Red Hat Enterprise Linux 5.

Description

Samba is an open-source implementation of the Server Message Block (SMB) or
Common Internet File System (CIFS) protocol, which allows PC-compatible
machines to share files, printers, and other information.

The samba3x packages have been upgraded to upstream version 3.6.23, which
provides a number of bug fixes and enhancements over the previous version. Note
that this also changes the format of the Trivial Database (TDB) files, and the
existing TDB files are updated to conform to the new format when you upgrade
your Samba packages. In addition, earlier versions of Samba are not compatible
with the new TDB file format. In order to successfully downgrade to an earlier
version of Samba, you must use a backed up version of your TDB files, which uses
the previous formatting. (BZ#1035006)

This update also fixes the following bugs:

• Due to incorrect Security Identifier (SID) mappings for Access Control List

(ACL) files, generating a user access token previously sometimes failed. With
this update, the conversion of SID values for ACL files has been amended and
user access tokens are created as expected. (BZ#1109436)

• Prior to this update, an incorrect return value check caused the fallback from

TCP/IP to a named pipe to fail. As a consequence, it was not possible to create
a Local Security Authority (LSA) query for user and group information. This
update fixes the check of the above return value, allowing the fallback to a
named pipe to occur. As a result, LSA querying over a named pipe now works as
expected. (BZ#981369)

• Prior to this update, the search string of the function encoding the

Lightweight Directory Access Protocol (LDAP) binary, ldb_binary_encode(),
detected the used character set incorrectly. As a consequence, Samba generated
invalid search strings. This update fixes the encoding of the local string, and
Samba now generates valid LDAP search strings. (BZ#1033773)

• Previously, Samba always wrote a negative cache entry for the user map. As a

consequence, user name mapping did not function consistently. With this update,
Samba only writes a negative cache entry if the mapping fails, and user name
mapping now works correctly. (BZ#1081002)

• When the smbd server daemon executed spooling for a print action, it

previously did not include the job ID in the generated spool-file path. As a
consequence, the spool check could not validate the spool-file's existence, and
the printing thus failed. With this update, smbd includes the job ID in the
spool-file path and parsing the file name succeeds. As a result, printing via
Samba now works as expected. (BZ#996656)

In addition, this update adds the following enhancements:

• A timeout option has been added to the smbclient command-line tool. This

allows users to customize the timeout value for Samba file operations by using
the "smbclient --help | grep timeout" command. (BZ#1037273)

• It is now possible to set a different OS version for the Spool Subsystem

(spoolss) configuration. This allows users to work around situations where
printing drivers do not interact with the printing server because they detect
that the version of the printing server is too old. (BZ#1101922)

Users of Samba are advised to upgrade to these updated packages, which fix these
bugs and add these enhancements. After installing this update, the smb service
will be restarted automatically.

Solution

Before applying this update, make sure all previously released errata relevant
to your system have been applied, and back up your existing TDB files.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 996656 - printing fails in function cups_job_submit
• BZ - 1034161 - Rebuild of samba package failed (fam issue)
• BZ - 1037273 - please backport timeout option to samba
• BZ - 1099439 - samba: net ads testjoin hangs in infinite(?) loop
• BZ - 1100658 - talloc panic when test run
• BZ - 1101202 - samba3x: guest ok + force user + force group doesn't work

CVEs

(none)

References

(none)