Ubuntu 3397-1: strongSwan vulnerability

    Date21 Aug 2017
    CategoryUbuntu
    55
    Posted ByLinuxSecurity Advisories
    strongSwan could be made to crash or hang if it received specially crafted network traffic.
    ==========================================================================
    Ubuntu Security Notice USN-3397-1
    August 21, 2017
    
    strongswan vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 17.04
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    strongSwan could be made to crash or hang if it received specially
    crafted network traffic.
    
    Software Description:
    - strongswan: IPsec VPN solution
    
    Details:
    
    It was discovered that strongSwan incorrectly handled verifying
    specific RSA signatures. A remote attacker could use this issue
    to cause strongSwan to crash, resulting in a denial of service.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 17.04:
      libstrongswan                   5.5.1-1ubuntu3.2
      strongswan                      5.5.1-1ubuntu3.2
    
    Ubuntu 16.04 LTS:
      libstrongswan                   5.3.5-1ubuntu3.4
      strongswan                      5.3.5-1ubuntu3.4
    
    Ubuntu 14.04 LTS:
      libstrongswan                   5.1.2-0ubuntu2.7
      strongswan                      5.1.2-0ubuntu2.7
    
    In general, a standard system update will make all the necessary
    changes.
    
    References:
      https://www.ubuntu.com/usn/usn-3397-1
      CVE-2017-11185
    
    Package Information:
      https://launchpad.net/ubuntu/+source/strongswan/5.5.1-1ubuntu3.2
      https://launchpad.net/ubuntu/+source/strongswan/5.3.5-1ubuntu3.4
      https://launchpad.net/ubuntu/+source/strongswan/5.1.2-0ubuntu2.7
    
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