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AUSCERT External Security Bulletin Redistribution
USN-4217-2: Samba vulnerabilities
12 December 2019
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
CVE Names: CVE-2019-14870 CVE-2019-14861
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USN-4217-2: Samba vulnerabilities
11 December 2019
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
Several security issues were fixed in Samba.
o samba - SMB/CIFS file, print, and login server for Unix
USN-4217-1 fixed several vulnerabilities in Samba. This update provides the
corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
Andreas Oster discovered that the Samba DNS management server incorrectly
handled certain records. An authenticated attacker could possibly use this
issue to crash Samba, resulting in a denial of service. (CVE-2019-14861)
Isaac Boukris discovered that Samba did not enforce the Kerberos
DelegationNotAllowed feature restriction, contrary to expectations.
The problem can be corrected by updating your system to the following package
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
To update your system, please follow these instructions: https://
In general, a standard system update will make all the necessary changes.
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