=========================================================================Ubuntu Security Notice USN-3353-4
July 24, 2017
samba vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Summary:
Samba could allow unintended access to network services.
Software Description:
- samba: SMB/CIFS file, print, and login server for Unix
Details:
USN-3353-1 fixed a vulnerability in Heimdal. This update provides the
corresponding update for Samba.
Original advisory details:
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
that Samba clients incorrectly trusted unauthenticated portions
of Kerberos tickets. A remote attacker could use this to impersonate
trusted network services or perform other attacks.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
libsmbclient 2:3.6.25-0ubuntu0.12.04.12
In general, a standard system update will make all the necessary
changes.
References:
https://ubuntu.com/security/notices/USN-3353-4
https://ubuntu.com/security/notices/USN-3353-1
CVE-2017-11103
