Ubuntu 4108-1: Zstandard vulnerability

    Date21 Aug 2019
    CategoryUbuntu
    2935
    Posted ByLinuxSecurity Advisories
    Zstandard could be made to execute arbitrary code if it received specially crafted input.
    ==========================================================================
    Ubuntu Security Notice USN-4108-1
    August 21, 2019
    
    libzstd vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    
    Summary:
    
    Zstandard could be made to execute arbitrary code if it received
    specially crafted input.
    
    Software Description:
    - libzstd: fast lossless compression algorithm -- development files
    
    Details:
    
    It was discovered that Zstandard incorrectly handled certain inputs.
    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 18.04 LTS:
      libzstd1                        1.3.3+dfsg-2ubuntu1.1
      zstd                            1.3.3+dfsg-2ubuntu1.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4108-1
      CVE-2019-11922
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libzstd/1.3.3+dfsg-2ubuntu1.1
    
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