=========================================================================Ubuntu Security Notice USN-3242-1
March 23, 2017

samba vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Samba could be made to expose sensitive information over the network.

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

Details:

Jann Horn discovered that Samba incorrectly handled symlinks. An
authenticated remote attacker could use this issue to access files on the
server outside of the exported directories.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.10:
  samba                           2:4.4.5+dfsg-2ubuntu5.4

Ubuntu 16.04 LTS:
  samba                           2:4.3.11+dfsg-0ubuntu0.16.04.5

Ubuntu 14.04 LTS:
  samba                           2:4.3.11+dfsg-0ubuntu0.14.04.6

Ubuntu 12.04 LTS:
  samba                           2:3.6.25-0ubuntu0.12.04.9

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-3242-1
  CVE-2017-2619

Package Information:
  https://launchpad.net/ubuntu/+source/samba/2:4.4.5+dfsg-2ubuntu5.4
  https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.5
  https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.6
  https://launchpad.net/ubuntu/+source/samba/2:3.6.25-0ubuntu0.12.04.9