RHN Errata Alert: Moderate: samba security update

[Red Hat Network Alert <dev-null@rhn.redhat.com>]

Red Hat Network has determined that the following advisory is applicable to
one or more of the systems you have registered:

Complete information about this errata can be found at the following location:
     https://rhn.redhat.com/rhn/errata/details/Details.do?eid=9282

Security Advisory - RHSA-2009:1529-1
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Summary:
Moderate: samba security update

Updated samba packages that fix multiple security issues are now available
for Red Hat Enterprise Linux 4 and 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

Description:
Samba is a suite of programs used by machines to share files, printers, and
other information.

A denial of service flaw was found in the Samba smbd daemon. An
authenticated, remote user could send a specially-crafted response that
would cause an smbd child process to enter an infinite loop. An
authenticated, remote user could use this flaw to exhaust system resources
by opening multiple CIFS sessions. (CVE-2009-2906)

An uninitialized data access flaw was discovered in the smbd daemon when
using the non-default "dos filemode" configuration option in "smb.conf". An
authenticated, remote user with write access to a file could possibly use
this flaw to change an access control list for that file, even when such
access should have been denied. (CVE-2009-1888)

A flaw was discovered in the way Samba handled users without a home
directory set in the back-end password database (e.g. "/etc/passwd"). If a
share for the home directory of such a user was created (e.g. using the
automated "[homes]" share), any user able to access that share could see
the whole file system, possibly bypassing intended access restrictions.
(CVE-2009-2813)

The mount.cifs program printed CIFS passwords as part of its debug output
when running in verbose mode. When mount.cifs had the setuid bit set, a
local, unprivileged user could use this flaw to disclose passwords from a
file that would otherwise be inaccessible to that user. Note: mount.cifs
from the samba packages distributed by Red Hat does not have the setuid bit
set. This flaw only affected systems where the setuid bit was manually set
by an administrator. (CVE-2009-2948)

Users of Samba should upgrade to these updated packages, which contain
backported patches to correct these issues. After installing this update,
the smb service will be restarted automatically.

References:
http://www.redhat.com/security/updates/classification/#moderate
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Taking Action
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You may address the issues outlined in this advisory in two ways:

     - select your server name by clicking on its name from the list
       available at the following location, and then schedule an
       errata update for it:
           https://rhn.redhat.com/rhn/systems/SystemList.do

     - run the Update Agent on each affected server.


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Changing Notification Preferences
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        URL: https://rhn.redhat.com/rhn/account/UserPreferences.do

You can also enable/disable notification on a per system basis by selecting an
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Affected Systems List
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This Errata Advisory may apply to the systems listed below. If you know that
this errata does not apply to a system listed, it might be possible that the
package profile for that server is out of date. In that case you should refresh 
the system's package profile by running *one* of the following commands as root 
on that system:

 * 'up2date -p' (on Enterprise Linux systems prior to RHEL5)
 * 'rhn-profile-sync' (on Enterprise Linux 5 or later) 

There are 72 affected systems registered in 'Your RHN' (only systems for
which you have explicitly enabled Errata Alerts are shown).

Release   Arch       Profile Name
--------  --------   ------------
4WS       EM64T      bitler                                  
4AS       i686       vmhermes                                
4WS       i686       wstest                                  
4AS       i686       node1.mpifc                             
4AS       i686       node2.mpifc                             
4AS       i686       node3.mpifc                             
4AS       i686       node4.mpifc                             
4AS       athlon     unknown                                 


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