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[USN-3353-4] Samba vulnerability

Posted on 24 July 2017
Ubuntu Security

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Ubuntu Security Notice USN-3353-4
July 24, 2017

samba vulnerability
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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:

=C2=A0Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
=C2=A0that Samba clients incorrectly trusted unauthenticated portions
=C2=A0of Kerberos tickets. A remote attacker could use this to impersonate
=C2=A0trusted 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:
=C2=A0 libsmbclient=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A02:3.6.25-=
0ubuntu0.12.04.12

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

References:
=C2=A0 https://www.ubuntu.com/usn/usn-3353-4
=C2=A0 https://www.ubuntu.com/usn/usn-3353-1
=C2=A0 CVE-2017-11103

 

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