Ubuntu 3426-2: Samba vulnerabilities

    Date02 Nov 2017
    CategoryUbuntu
    40
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in XXX-APP-XXX.
    ==========================================================================
    Ubuntu Security Notice USN-3426-2
    November 02, 2017
    
    samba vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in XXX-APP-XXX.
    
    Software Description:
    - samba: SMB/CIFS file, print, and login server for Unix
    
    Details:
    
    USN-3426-1 fixed several vulnerabilities in Samba. This update
    provides the corresponding update for Ubuntu 12.04 ESM.
    
    Original advisory details:
    
     Stefan Metzmacher discovered that Samba incorrectly enforced SMB
     signing in certain situations. A remote attacker could use this issue
     to perform a man in the middle attack. (CVE-2017-12150)
    
     Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled
     memory when SMB1 is being used. A remote attacker could possibly use
     this issue to obtain server memory contents. (CVE-2017-12163)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 ESM:
      samba                           2:3.6.25-0ubuntu0.12.04.13
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://www.ubuntu.com/usn/usn-3426-2
      https://www.ubuntu.com/usn/usn-3426-1
      CVE-2017-12150, CVE-2017-12163
    
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