The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: rsyslog 8.16.0-1ubuntu3.1+esm1 In general, a standard system update will make all the necessary changes.
https://ubuntu.com/security/notices/USN-5419-1
CVE-2018-16881, CVE-2019-17041, CVE-2019-17042
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