Several security issues were fixed in Samba.
USN-3827-1 fixed a vulnerability in samba. This update provides the corresponding update for Ubuntu 12.04 ESM.
27 November 2018
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Samba.
USN-3827-1 fixed a vulnerability in samba. This update provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Florian Stuelpner discovered that Samba incorrectly handled CNAME records. A remote attacker could use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-14629)
Alex MacCuish discovered that Samba incorrectly handled memory when configured to accept smart-card authentication. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-16841)
Garming Sam discovered that Samba incorrectly handled memory when processing LDAP searches. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2018-16851)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.