Ubuntu 2184-2: Unity vulnerabilities

    Date30 Apr 2014
    CategoryUbuntu
    48
    Posted ByLinuxSecurity Advisories
    The Unity lock screen could be bypassed.
    ==========================================================================
    Ubuntu Security Notice USN-2184-2
    April 30, 2014
    
    unity vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 LTS
    
    Summary:
    
    The Unity lock screen could be bypassed.
    
    Software Description:
    - unity: Interface designed for efficiency of space and interaction.
    
    Details:
    
    USN-2184-1 fixed lock screen vulnerabilities in Unity. Further testing has
    uncovered more issues which have been fixed in this update. This update
    also fixes a regression with the shutdown dialogue.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     Frédéric Bardy discovered that Unity incorrectly filtered keyboard
     shortcuts when the screen was locked. A local attacker could possibly use
     this issue to run commands, and unlock the current session.
      Giovanni Mellini discovered that Unity could display the Dash in certain
     conditions when the screen was locked. A local attacker could possibly use
     this issue to run commands, and unlock the current session.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      unity                           7.2.0+14.04.20140423-0ubuntu1.2
    
    After a standard system update you need to restart your session to make all
    the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2184-2
      http://www.ubuntu.com/usn/usn-2184-1
      https://launchpad.net/bugs/1314247
    
    Package Information:
      https://launchpad.net/ubuntu/+source/unity/7.2.0+14.04.20140423-0ubuntu1.2
    
    
    
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