Ubuntu 4221-1: libpcap vulnerability

    Date10 Dec 2019
    CategoryUbuntu
    189
    Posted ByLinuxSecurity Advisories
    Applications using libpcap could be made to crash if given specially crafted data.
    ==========================================================================
    Ubuntu Security Notice USN-4221-1
    December 11, 2019
    
    libpcap vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 ESM
    
    Summary:
    
    Applications using libpcap could be made to crash if given specially
    crafted data.
    
    Software Description:
    - libpcap: Library for for user-level network packet capture
    
    Details:
    
    It was discovered that libpcap did not properly validate PHB headers in
    some situations. An attacker could use this to cause a denial of service
    (memory exhaustion).
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      libpcap0.8                      1.8.1-6ubuntu1.19.04.1
    
    Ubuntu 18.04 LTS:
      libpcap0.8                      1.8.1-6ubuntu1.18.04.1
    
    Ubuntu 16.04 LTS:
      libpcap0.8                      1.7.4-2ubuntu0.1
    
    Ubuntu 14.04 ESM:
      libpcap0.8                      1.5.3-2ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4221-1
      CVE-2019-15165
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libpcap/1.8.1-6ubuntu1.19.04.1
      https://launchpad.net/ubuntu/+source/libpcap/1.8.1-6ubuntu1.18.04.1
      https://launchpad.net/ubuntu/+source/libpcap/1.7.4-2ubuntu0.1
    
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