Ubuntu 4221-2: libpcap vulnerability

    Date 15 Jan 2020
    362
    Posted By LinuxSecurity Advisories
    Applications using libpcap could be made to crash if given specially crafted data.
    ==========================================================================
    Ubuntu Security Notice USN-4221-2
    January 15, 2020
    
    libpcap vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 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:
    
    USN-4221-1 fixed a vulnerability in libpcap. This update provides
    the corresponding update for Ubuntu 12.04 ESM.
    
    Original advisory 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 12.04 ESM:
      libpcap0.8                      1.1.1-10ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4221-2
      https://usn.ubuntu.com/4221-1
      CVE-2019-15165
    

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