Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : samba vulnerabilities (USN-3426-1)

Ubuntu Security Notice (C) 2017 Canonical, Inc. / NASL script (C) 2017 Tenable Network Security, Inc.


Synopsis :

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

Description :

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).

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 : 4.0
(CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N)
CVSS Temporal Score : 3.3
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 103416 ()

Bugtraq ID:

CVE ID: CVE-2017-12150
CVE-2017-12151
CVE-2017-12163

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