The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: libxslt1.1 1.1.28-2.1ubuntu0.3+esm1 Ubuntu 14.04 ESM: libxslt1.1 1.1.28-2ubuntu0.2+esm2 In general, a standard system update will make all the necessary changes.
https://ubuntu.com/security/notices/USN-5575-2
https://ubuntu.com/security/notices/USN-5575-1
CVE-2019-5815, CVE-2021-30560
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