Ubuntu 4243-1: libbsd vulnerabilities

    Date 20 Jan 2020
    200
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in libbsd.
    ==========================================================================
    Ubuntu Security Notice USN-4243-1
    January 20, 2020
    
    libbsd vulnerabilities
    ==========================================================================
    
    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
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in libbsd.
    
    Software Description:
    - libbsd: utility functions from BSD systems - development files
    
    Details:
    
    It was discovered that libbsd incorrectly handled certain inputs.
    An attacker could possibly use this issue to execute arbitrary code.
    This issue only affected Ubuntu 14.04 ESM. (CVE-2016-2090)
    
    It was discovered that libbsd incorrectly handled certain strings.
    An attacker could possibly use this issue to access sensitive information.
    (CVE-2019-20367)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      libbsd0                         0.9.1-2ubuntu0.1
    
    Ubuntu 18.04 LTS:
      libbsd0                         0.8.7-1ubuntu0.1
    
    Ubuntu 16.04 LTS:
      libbsd0                         0.8.2-1ubuntu0.1
    
    Ubuntu 14.04 ESM:
      libbsd0                         0.6.0-2ubuntu1+esm1
    
    Ubuntu 12.04 ESM:
      libbsd0                         0.3.0-2ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4243-1
      CVE-2016-2090, CVE-2019-20367
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libbsd/0.9.1-2ubuntu0.1
      https://launchpad.net/ubuntu/+source/libbsd/0.8.7-1ubuntu0.1
      https://launchpad.net/ubuntu/+source/libbsd/0.8.2-1ubuntu0.1
    

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