Ubuntu 4038-1: bzip2 vulnerabilities

    Date26 Jun 2019
    CategoryUbuntu
    2521
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in bzip2.
    ==========================================================================
    Ubuntu Security Notice USN-4038-1
    June 26, 2019
    
    bzip2 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.04
    - Ubuntu 18.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in bzip2.
    
    Software Description:
    - bzip2: high-quality block-sorting file compressor - utilities
    
    Details:
    
    Aladdin Mubaied discovered that bzip2 incorrectly handled certain files.
    An attacker could possibly use this issue to cause a denial of service.
    This issue only affected Ubuntu 16.04 LTS. (CVE-2016-3189)
    
    It was discovered that bzip2 incorrectly handled certain files.
    An attacker could possibly use this issue to execute arbitrary code.
    (CVE-2019-12900)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      bzip2                           1.0.6-9ubuntu0.19.04
      libbz2-1.0                      1.0.6-9ubuntu0.19.04
    
    Ubuntu 18.10:
      bzip2                           1.0.6-9ubuntu0.18.10
      libbz2-1.0                      1.0.6-9ubuntu0.18.10
    
    Ubuntu 18.04 LTS:
      bzip2                           1.0.6-8.1ubuntu0.1
      libbz2-1.0                      1.0.6-8.1ubuntu0.1
    
    Ubuntu 16.04 LTS:
      bzip2                           1.0.6-8ubuntu0.1
      libbz2-1.0                      1.0.6-8ubuntu0.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4038-1
      CVE-2016-3189, CVE-2019-12900
    
    Package Information:
      https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.19.04
      https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.18.10
      https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8.1ubuntu0.1
      https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8ubuntu0.1
    
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