Ubuntu 2922-1: Samba vulnerabilities

    Date08 Mar 2016
    CategoryUbuntu
    25
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Samba.
    ==========================================================================
    Ubuntu Security Notice USN-2922-1
    March 08, 2016
    
    samba vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 15.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Several security issues were fixed in Samba.
    
    Software Description:
    - samba: SMB/CIFS file, print, and login server for Unix
    
    Details:
    
    Jeremy Allison discovered that Samba incorrectly handled ACLs on symlink
    paths. A remote attacker could use this issue to overwrite the ownership of
    ACLs using symlinks. (CVE-2015-7560)
    
    Garming Sam and Douglas Bagnall discovered that the Samba internal DNS
    server incorrectly handled certain DNS TXT records. A remote attacker could
    use this issue to cause Samba to crash, resulting in a denial of service,
    or possibly obtain uninitialized memory contents. This issue only applied
    to Ubuntu 14.04 LTS and Ubuntu 15.10. (CVE-2016-0771)
    
    It was discovered that the Samba Web Administration Tool (SWAT) was
    vulnerable to clickjacking and cross-site request forgery attacks. This
    issue only affected Ubuntu 12.04 LTS. (CVE-2013-0213, CVE-2013-0214)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 15.10:
      samba                           2:4.1.17+dfsg-4ubuntu3.3
    
    Ubuntu 14.04 LTS:
      samba                           2:4.1.6+dfsg-1ubuntu2.14.04.13
    
    Ubuntu 12.04 LTS:
      samba                           2:3.6.3-2ubuntu2.17
      swat                            2:3.6.3-2ubuntu2.17
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2922-1
      CVE-2013-0213, CVE-2013-0214, CVE-2015-7560, CVE-2016-0771
    
    Package Information:
      https://launchpad.net/ubuntu/+source/samba/2:4.1.17+dfsg-4ubuntu3.3
      https://launchpad.net/ubuntu/+source/samba/2:4.1.6+dfsg-1ubuntu2.14.04.13
      https://launchpad.net/ubuntu/+source/samba/2:3.6.3-2ubuntu2.17
    
    
    
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