==========================================================================
Ubuntu Security Notice USN-3353-2
July 14, 2017

samba vulnerability
==========================================================================

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

– Ubuntu 17.04
– Ubuntu 16.10
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS

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.

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 servers or perform other attacks.

Update instructions:

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

Ubuntu 17.04:
samba-libs 2:4.5.8+dfsg-0ubuntu0.17.04.4

Ubuntu 16.10:
samba-libs 2:4.4.5+dfsg-2ubuntu5.8

Ubuntu 16.04 LTS:
samba-libs 2:4.3.11+dfsg-0ubuntu0.16.04.9

Ubuntu 14.04 LTS:
samba-libs 2:4.3.11+dfsg-0ubuntu0.14.04.10

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

References:
https://www.ubuntu.com/usn/usn-3353-2
https://www.ubuntu.com/usn/usn-3353-1
CVE-2017-11103

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.5.8+dfsg-0ubuntu0.17.04.4
https://launchpad.net/ubuntu/+source/samba/2:4.4.5+dfsg-2ubuntu5.8
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.9
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.10

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==========================================================================

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://www.ubuntu.com/usn/usn-3353-4

  https://www.ubuntu.com/usn/usn-3353-1

  CVE-2017-11103

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