Ubuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : samba vulnerability (USN-3348-1)

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 :

It was discovered that Samba incorrectly handled dangling symlinks. A
remote attacker could possibly use this issue to cause Samba to hang,
resulting in a denial of service. This issue only applied to Ubuntu
14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-9461)

In addition, this update fixes a regression introduced by USN-3267-1
that caused Samba to incorrectly handle non-wide symlinks to
directories.

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 :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.1
(CVSS2#E:POC/RL:OF/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 101262 ()

Bugtraq ID:

CVE ID: CVE-2017-9461

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