Ubuntu Security Notice USN-3426-2
2nd November, 2017
A security issue affects these releases of Ubuntu and its
- Ubuntu 12.04 LTS
Several security issues were fixed in XXX-APP-XXX.
– SMB/CIFS file, print, and login server for Unix
USN-3426-1 fixed several vulnerabilities in Samba. This update
provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Stefan Metzmacher discovered that Samba incorrectly enforced SMB signing in
certain situations. A remote attacker could use this issue to perform a man
in the middle attack. (CVE-2017-12150)
Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory
when SMB1 is being used. A remote attacker could possibly use this issue to
obtain server memory contents. (CVE-2017-12163)
The problem can be corrected by updating your system to the following
To update your system, please follow these instructions:
In general, a standard system update will make all the necessary changes.