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    Ubuntu 4495-1: Apache Log4j vulnerability

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    Apache Log4j could be made to remotely execute arbitrary code if it received specially crafted log data.
    ==========================================================================
    Ubuntu Security Notice USN-4495-1
    September 15, 2020
    
    Apache Log4j vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    
    Summary:
    
    Apache Log4j could be made to remotely execute arbitrary code if it
    received specially crafted log data.
    
    Software Description:
    - apache-log4j1.2: Java-based open-source logging tool
    
    Details:
    
    It was discovered that Apache Log4j does not properly deserialize
    untrusted data. An attacker could possibly use this issue to remotely
    execute arbitrary code. (CVE-2019-17571)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      liblog4j1.2-java                1.2.17-8+deb10u1build0.18.04.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4495-1
      CVE-2019-17571
    
    Package Information:
    
    https://launchpad.net/ubuntu/+source/apache-log4j1.2/1.2.17-8+deb10u1build0.18.04.1
    
    

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