Ubuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : samba vulnerability (USN-3353-2) (Orpheus' Lyre)

high Nessus Plugin ID 101770

Synopsis

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

Description

USN-3353-1 fixed a vulnerability in Heimdal. This update provides the corresponding update for Samba.

Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered that Samba clients incorrectly trusted unauthenticated portions of Kerberos tickets. A remote attacker could use this to impersonate trusted network servers or perform other attacks.

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-libs package.

See Also

https://usn.ubuntu.com/3353-2/

Plugin Details

Severity: High

ID: 101770

File Name: ubuntu_USN-3353-2.nasl

Version: 1.7

Type: local

Agent: unix

Published: 7/17/2017

Updated: 9/18/2019

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:samba-libs, 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 Ease: No known exploits are available

Patch Publication Date: 7/14/2017

Vulnerability Publication Date: 7/13/2017

Reference Information

CVE: CVE-2017-11103

USN: 3353-2