The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: libpcre3 2:8.39-13ubuntu0.22.04.1 Ubuntu 21.10: libpcre3 2:8.39-13ubuntu0.21.10.1 Ubuntu 20.04 LTS: libpcre3 2:8.39-12ubuntu0.1 Ubuntu 18.04 LTS: libpcre3 2:8.39-9ubuntu0.1 Ubuntu 16.04 ESM: libpcre3 2:8.38-3.1ubuntu0.1~esm1 Ubuntu 14.04 ESM: libpcre3 1:8.31-2ubuntu2.3+esm1 After a standard system update you need to restart applications using PCRE, such as the Apache HTTP server and Nginx, to make all the necessary changes.
https://ubuntu.com/security/notices/USN-5425-1
CVE-2019-20838, CVE-2020-14155
https://launchpad.net/ubuntu/+source/pcre3/2:8.39-13ubuntu0.22.04.1 https://launchpad.net/ubuntu/+source/pcre3/2:8.39-13ubuntu0.21.10.1 https://launchpad.net/ubuntu/+source/pcre3/2:8.39-12ubuntu0.1 https://launchpad.net/ubuntu/+source/pcre3/2:8.39-9ubuntu0.1
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