The following updates has been released for Debian GNU/Linux:

USN-3426-1: Samba vulnerabilities
USN-3427-1: Emacs vulnerability
USN-3428-1: Emacs vulnerability

USN-3426-1: Samba vulnerabilities

==========================================================================
Ubuntu Security Notice USN-3426-1
September 21, 2017

samba vulnerabilities
==========================================================================

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

- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 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:

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)

Stefan Metzmacher discovered that Samba incorrectly handled encryption
across DFS redirects. A remote attacker could use this issue to perform a
man in the middle attack. (CVE-2017-12151)

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)

Update instructions:

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

Ubuntu 17.04:
samba 2:4.5.8+dfsg-0ubuntu0.17.04.7

Ubuntu 16.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.16.04.11

Ubuntu 14.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.14.04.12

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

References:
https://www.ubuntu.com/usn/usn-3426-1
CVE-2017-12150, CVE-2017-12151, CVE-2017-12163

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.5.8+dfsg-0ubuntu0.17.04.7
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.11
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.12

USN-3427-1: Emacs vulnerability

==========================================================================
Ubuntu Security Notice USN-3427-1
September 21, 2017

emacs24 vulnerability
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Emacs could be made to run programs as your login if it
opened a specially crafted file.

Software Description:
- emacs24: GNU Emacs editor

Details:

Charles A. Roelli discovered that Emacs incorrectly handled certain
files. If a user were tricked into opening a specially crafted file, an
attacker could possibly use this to execute arbitrary code.

Update instructions:

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

Ubuntu 16.04 LTS:
  emacs24 24.5+1-6ubuntu1.1

Ubuntu 14.04 LTS:
  emacs24 24.3+1-2ubuntu1.1

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

References:
  https://www.ubuntu.com/usn/usn-3427-1
  CVE-2017-14482

Package Information:
  https://launchpad.net/ubuntu/+source/emacs24/24.5+1-6ubuntu1.1
  https://launchpad.net/ubuntu/+source/emacs24/24.3+1-2ubuntu1.1

USN-3428-1: Emacs vulnerability

==========================================================================
Ubuntu Security Notice USN-3428-1
September 21, 2017

emacs25 vulnerability
==========================================================================

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

- Ubuntu 17.04

Summary:

Emacs could be made to run programs as your login if it opened a
specially crafted file.

Software Description:
- emacs25: GNU Emacs editor

Details:

Charles A. Roelli discovered that Emacs incorrectly handled certain
files. If a user were tricked into opening a specially crafted file, an
attacker could possibly use this to execute arbitrary code.

Update instructions:

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

Ubuntu 17.04:
  emacs25 25.1+1-3ubuntu4.1

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

References:
  https://www.ubuntu.com/usn/usn-3428-1
  CVE-2017-14482

Package Information:
  https://launchpad.net/ubuntu/+source/emacs25/25.1+1-3ubuntu4.1