Ubuntu 2275-1: DBus vulnerabilities

    Date08 Jul 2014
    CategoryUbuntu
    49
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in DBus.
    ==========================================================================
    Ubuntu Security Notice USN-2275-1
    July 08, 2014
    
    dbus vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 LTS
    - Ubuntu 13.10
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Several security issues were fixed in DBus.
    
    Software Description:
    - dbus: simple interprocess messaging system
    
    Details:
    
    Alban Crequy discovered that dbus-daemon incorrectly sent AccessDenied
    errors to the service instead of the client when enforcing permissions. A
    local user can use this issue to possibly deny access to the service.
    (CVE-2014-3477)
    
    Alban Crequy discovered that dbus-daemon incorrectly handled certain file
    descriptors. A local attacker could use this issue to cause services or
    clients to disconnect, resulting in a denial of service. (CVE-2014-3532,
    CVE-2014-3533)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      dbus                            1.6.18-0ubuntu4.1
      libdbus-1-3                     1.6.18-0ubuntu4.1
    
    Ubuntu 13.10:
      dbus                            1.6.12-0ubuntu10.1
      libdbus-1-3                     1.6.12-0ubuntu10.1
    
    Ubuntu 12.04 LTS:
      dbus                            1.4.18-1ubuntu1.5
      libdbus-1-3                     1.4.18-1ubuntu1.5
    
    After a standard system update you need to reboot your computer to make all
    the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2275-1
      CVE-2014-3477, CVE-2014-3532, CVE-2014-3533
    
    Package Information:
      https://launchpad.net/ubuntu/+source/dbus/1.6.18-0ubuntu4.1
      https://launchpad.net/ubuntu/+source/dbus/1.6.12-0ubuntu10.1
      https://launchpad.net/ubuntu/+source/dbus/1.4.18-1ubuntu1.5
    
    
    
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