Ubuntu 4038-3: bzip2 regression

    Date04 Jul 2019
    CategoryUbuntu
    2051
    Posted ByLinuxSecurity Advisories
    USN-4038-1 introduced a regression in bzip2.
    ==========================================================================
    Ubuntu Security Notice USN-4038-3
    July 04, 2019
    
    bzip2 regression
    ==========================================================================
    
    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:
    
    USN-4038-1 introduced a regression in bzip2.
    
    Software Description:
    - bzip2: high-quality block-sorting file compressor - utilities
    
    Details:
    
    USN-4038-1 fixed a vulnerability in bzip2. The update introduced a regression causing
    bzip2 to incorrect raises CRC errors for some files.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     It was discovered that bzip2 incorrectly handled certain files.
     An attacker could possibly use this issue to execute arbitrary code.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      bzip2                           1.0.6-9ubuntu0.19.04.1
      libbz2-1.0                      1.0.6-9ubuntu0.19.04.1
    
    Ubuntu 18.10:
      bzip2                           1.0.6-9ubuntu0.18.10.1
      libbz2-1.0                      1.0.6-9ubuntu0.18.10.1
    
    Ubuntu 18.04 LTS:
      bzip2                           1.0.6-8.1ubuntu0.2
      libbz2-1.0                      1.0.6-8.1ubuntu0.2
    
    Ubuntu 16.04 LTS:
      bzip2                           1.0.6-8ubuntu0.2
      libbz2-1.0                      1.0.6-8ubuntu0.2
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4038-3
      https://usn.ubuntu.com/4038-1
      https://launchpad.net/bugs/1834494
    
    Package Information:
      https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.19.04.1
      https://launchpad.net/ubuntu/+source/bzip2/1.0.6-9ubuntu0.18.10.1
      https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8.1ubuntu0.2
      https://launchpad.net/ubuntu/+source/bzip2/1.0.6-8ubuntu0.2
    
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