Ubuntu 2014-1: OpenSSH vulnerability

    Date08 Nov 2013
    CategoryUbuntu
    62
    Posted ByLinuxSecurity Advisories
    OpenSSH could be made to run programs if it received specially crafted network traffic from an authenticated user.
    ==========================================================================
    Ubuntu Security Notice USN-2014-1
    November 08, 2013
    
    openssh vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 13.10
    
    Summary:
    
    OpenSSH could be made to run programs if it received specially crafted
    network traffic from an authenticated user.
    
    Software Description:
    - openssh: secure shell (SSH) client, for secure access to remote machines
    
    Details:
    
    Markus Friedl discovered that OpenSSH incorrectly handled memory when the
    AES-GCM cipher was used. A remote authenticated attacker could use this
    issue to execute arbitrary code as their user, possibly bypassing
    shell or command restrictions.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 13.10:
      openssh-server                  1:6.2p2-6ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2014-1
      CVE-2013-4548
    
    Package Information:
      https://launchpad.net/ubuntu/+source/openssh/1:6.2p2-6ubuntu0.1
    
    
    
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