The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 ESM: libsmbclient 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4 samba 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4 In general, a standard system update will make all the necessary changes.
https://ubuntu.com/security/notices/USN-4217-2
https://ubuntu.com/security/notices/USN-4217-1
CVE-2019-14861, CVE-2019-14870
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