Ubuntu 3242-2: Samba regression

    Date30 Mar 2017
    68
    Posted ByLinuxSecurity Advisories
    USN-3242-1 introduced a regression in Samba.
    ==========================================================================
    Ubuntu Security Notice USN-3242-2
    March 30, 2017
    
    samba regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.10
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    USN-3242-1 introduced a regression in Samba.
    
    Software Description:
    - samba: SMB/CIFS file, print, and login server for Unix
    
    Details:
    
    USN-3242-1 fixed a vulnerability in Samba. The upstream fix introduced a
    regression when Samba is configured to disable following symbolic links.
    
    This update fixes the problem.
    
    Original advisory details:
    
     Jann Horn discovered that Samba incorrectly handled symlinks. An
     authenticated remote attacker could use this issue to access files on the
     server outside of the exported directories.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.10:
      samba                           2:4.4.5+dfsg-2ubuntu5.5
    
    Ubuntu 16.04 LTS:
      samba                           2:4.3.11+dfsg-0ubuntu0.16.04.6
    
    Ubuntu 14.04 LTS:
      samba                           2:4.3.11+dfsg-0ubuntu0.14.04.7
    
    Ubuntu 12.04 LTS:
      samba                           2:3.6.25-0ubuntu0.12.04.10
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://www.ubuntu.com/usn/usn-3242-2
      https://www.ubuntu.com/usn/usn-3242-1
      https://launchpad.net/bugs/1675698
    
    Package Information:
      https://launchpad.net/ubuntu/+source/samba/2:4.4.5+dfsg-2ubuntu5.5
      https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.6
      https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.7
      https://launchpad.net/ubuntu/+source/samba/2:3.6.25-0ubuntu0.12.04.10
    
    
    

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