[USN-3353-4] Samba vulnerability

Leonidas S. Barbosa leo.barbosa at canonical.com
Mon Jul 24 18:06:37 UTC 2017

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


Samba could allow unintended access to network services.

Software Description:
- samba: SMB/CIFS file, print, and login server for Unix


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

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