Ubuntu 14.04 LTS / 16.04 LTS : samba vulnerability (USN-3092-1)

Ubuntu Security Notice (C) 2016 Canonical, Inc. / NASL script (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

Stefan Metzmacher discovered that Samba incorrectly handled certain
flags in SMB2/3 client connections. A remote attacker could use this
issue to disable client signing and impersonate servers by performing
a man in the middle attack.

Samba has been updated to 4.3.11 in Ubuntu 14.04 LTS and Ubuntu 16.04
LTS. In addition to the security fix, the updated packages contain bug
fixes, new features, and possibly incompatible changes.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected samba package.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.0
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 93800 ()

Bugtraq ID:

CVE ID: CVE-2016-2119

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