Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2018-7170

medium Nessus Plugin ID 222620

Language:

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549. (CVE-2018-7170)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2018-7170

https://ubuntu.com/security/CVE-2018-7170

Plugin Details

Severity: Medium

ID: 222620

File Name: unpatched_CVE_2018_7170.nasl

Version: 1.5

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 9/14/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 3.5

Temporal Score: 2.6

Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N

CVSS Score Source: CVE-2018-7170

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:sntp, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:ntp, cpe:/o:redhat:enterprise_linux:5, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:centos:centos:ntp-perl, cpe:/o:centos:centos:7, p-cpe:/a:canonical:ubuntu_linux:ntp, p-cpe:/a:redhat:enterprise_linux:ntp-perl, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:ntpdate, cpe:/o:redhat:enterprise_linux:7, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:centos:centos:ntp, p-cpe:/a:centos:centos:sntp, p-cpe:/a:centos:centos:ntpdate, p-cpe:/a:centos:centos:ntp-doc, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:redhat:enterprise_linux:ntp-doc, cpe:/o:redhat:enterprise_linux:6

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 2/27/2018

Reference Information

CVE: CVE-2018-7170