Ubuntu 2054-1: Samba vulnerabilities

    Date11 Dec 2013
    CategoryUbuntu
    63
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Samba.
    ==========================================================================
    Ubuntu Security Notice USN-2054-1
    December 11, 2013
    
    samba vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 13.10
    - Ubuntu 13.04
    - Ubuntu 12.10
    - Ubuntu 12.04 LTS
    - Ubuntu 10.04 LTS
    
    Summary:
    
    Several security issues were fixed in Samba.
    
    Software Description:
    - samba: SMB/CIFS file, print, and login server for Unix
    
    Details:
    
    It was discovered that Winbind incorrectly handled invalid group names with
    the require_membership_of parameter. If an administrator used an invalid
    group name by mistake, access was granted instead of having the login fail.
    (CVE-2012-6150)
    
    Stefan Metzmacher and Michael Adam discovered that Samba incorrectly
    handled DCE-RPC fragment length fields. A remote attacker could use this
    issue to cause Samba to crash, resulting in a denial of service, or
    possibly execute arbitrary code as the root user. (CVE-2013-4408)
    
    Hemanth Thummala discovered that Samba incorrectly handled file
    permissions when vfs_streams_depot or vfs_streams_xattr were enabled. A
    remote attacker could use this issue to bypass intended restrictions.
    (CVE-2013-4475)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 13.10:
      libpam-winbind                  2:3.6.18-1ubuntu3.1
      samba                           2:3.6.18-1ubuntu3.1
    
    Ubuntu 13.04:
      libpam-winbind                  2:3.6.9-1ubuntu1.2
      samba                           2:3.6.9-1ubuntu1.2
    
    Ubuntu 12.10:
      libpam-winbind                  2:3.6.6-3ubuntu5.3
      samba                           2:3.6.6-3ubuntu5.3
    
    Ubuntu 12.04 LTS:
      libpam-winbind                  2:3.6.3-2ubuntu2.9
      samba                           2:3.6.3-2ubuntu2.9
    
    Ubuntu 10.04 LTS:
      samba                           2:3.4.7~dfsg-1ubuntu3.13
      winbind                         2:3.4.7~dfsg-1ubuntu3.13
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2054-1
      CVE-2012-6150, CVE-2013-4408, CVE-2013-4475
    
    Package Information:
      https://launchpad.net/ubuntu/+source/samba/2:3.6.18-1ubuntu3.1
      https://launchpad.net/ubuntu/+source/samba/2:3.6.9-1ubuntu1.2
      https://launchpad.net/ubuntu/+source/samba/2:3.6.6-3ubuntu5.3
      https://launchpad.net/ubuntu/+source/samba/2:3.6.3-2ubuntu2.9
      https://launchpad.net/ubuntu/+source/samba/2:3.4.7~dfsg-1ubuntu3.13
    
    
    
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