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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3154
                  USN-4495-1: Apache Log4j vulnerability
                             16 September 2020

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Apache Log4j
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-17571  

Reference:         ASB-2020.0072
                   ESB-2020.1427
                   ESB-2020.0120.2
                   ESB-2020.0098

Original Bulletin: 
   https://usn.ubuntu.com/4495-1/

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USN-4495-1: Apache Log4j vulnerability
15 September 2020

Apache Log4j could be made to remotely execute arbitrary code if it 
received specially crafted log data.
Releases

  o Ubuntu 18.04 LTS

Packages

  o 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

  o liblog4j1.2-java - 1.2.17-8+deb10u1build0.18.04.1

In general, a standard system update will make all the necessary changes.

References

  o CVE-2019-17571

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