Ubuntu 2836-1: GRUB vulnerability

    Date15 Dec 2015
    CategoryUbuntu
    34
    Posted ByLinuxSecurity Advisories
    GRUB password protection can be bypassed.
    ==========================================================================
    Ubuntu Security Notice USN-2836-1
    December 15, 2015
    
    grub2 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 15.10
    - Ubuntu 15.04
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    GRUB password protection can be bypassed.
    
    Software Description:
    - grub2: GRand Unified Bootloader
    
    Details:
    
    Hector Marco and Ismael Ripoll discovered that GRUB incorrectly handled
    the backspace key when configured to use authentication. A local attacker
    could use this issue to bypass GRUB password protection.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 15.10:
      grub2-common                    2.02~beta2-29ubuntu0.2
    
    Ubuntu 15.04:
      grub2-common                    2.02~beta2-22ubuntu1.4
    
    Ubuntu 14.04 LTS:
      grub2-common                    2.02~beta2-9ubuntu1.6
    
    Ubuntu 12.04 LTS:
      grub2-common                    1.99-21ubuntu3.19
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2836-1
      CVE-2015-8370
    
    Package Information:
      https://launchpad.net/ubuntu/+source/grub2/2.02~beta2-29ubuntu0.2
      https://launchpad.net/ubuntu/+source/grub2/2.02~beta2-22ubuntu1.4
      https://launchpad.net/ubuntu/+source/grub2/2.02~beta2-9ubuntu1.6
      https://launchpad.net/ubuntu/+source/grub2/1.99-21ubuntu3.19
    
    
    
    You are not authorised to post comments.

    Comments powered by CComment

    LinuxSecurity Poll

    What do you think of the articles on LinuxSecurity?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/24-what-do-you-think-of-the-quality-of-the-articles-on-linuxsecurity?task=poll.vote&format=json
    24
    radio
    [{"id":"87","title":"Excellent, don't change a thing!","votes":"23","type":"x","order":"1","pct":53.49,"resources":[]},{"id":"88","title":"Should be more technical","votes":"5","type":"x","order":"2","pct":11.63,"resources":[]},{"id":"89","title":"Should include more HOWTOs","votes":"15","type":"x","order":"3","pct":34.88,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.