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

High Nessus Plugin ID 101262


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


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.


Update the affected samba package.

Plugin Details

Severity: High

ID: 101262

File Name: ubuntu_USN-3348-1.nasl

Version: $Revision: 3.4 $

Type: local

Agent: unix

Published: 2017/07/06

Modified: 2018/01/30

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:ND


Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:X

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:samba, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:16.10, cpe:/o:canonical:ubuntu_linux:17.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/07/05

Reference Information

CVE: CVE-2017-9461

OSVDB: 158642

USN: 3348-1