Ubuntu 3873-1: Open vSwitch vulnerabilities

    Date30 Jan 2019
    CategoryUbuntu
    2501
    Posted ByAnthony Pell
    Several security issues were fixed in Open vSwitch.
    ==========================================================================
    Ubuntu Security Notice USN-3873-1
    January 30, 2019
    
    openvswitch vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in Open vSwitch.
    
    Software Description:
    - openvswitch: Ethernet virtual switch
    
    Details:
    
    It was discovered that Open vSwitch incorrectly decoded certain packets. A
    remote attacker could possibly use this issue to cause Open vSwitch to
    crash, resulting in a denial of service. (CVE-2018-17204)
    
    It was discovered that Open vSwitch incorrectly handled processing certain
    flows. A remote attacker could possibly use this issue to cause Open
    vSwitch to crash, resulting in a denial of service. This issue only
    affected Ubuntu 18.04 LTS. (CVE-2018-17205)
    
    It was discovered that Open vSwitch incorrectly handled BUNDLE action
    decoding. A remote attacker could possibly use this issue to cause Open
    vSwitch to crash, resulting in a denial of service. (CVE-2018-17206)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      openvswitch-common              2.9.2-0ubuntu0.18.04.3
    
    Ubuntu 16.04 LTS:
      openvswitch-common              2.5.5-0ubuntu0.16.04.2
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3873-1
      CVE-2018-17204, CVE-2018-17205, CVE-2018-17206
    
    Package Information:
      https://launchpad.net/ubuntu/+source/openvswitch/2.9.2-0ubuntu0.18.04.3
      https://launchpad.net/ubuntu/+source/openvswitch/2.5.5-0ubuntu0.16.04.2
    
    
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