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Linux Distros Unpatched Vulnerability : CVE-2016-1549

medium Nessus Plugin ID 219353

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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.

 - A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock. (CVE-2016-1549)

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-2016-1549

https://ubuntu.com/security/CVE-2016-1549

Plugin Details

Severity: Medium

ID: 219353

File Name: unpatched_CVE_2016_1549.nasl

Version: 1.4

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: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2016-1549

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/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: cpe:/o:redhat:enterprise_linux:5, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:redhat:enterprise_linux:ntp, p-cpe:/a:centos:centos:ntp-perl, p-cpe:/a:redhat:enterprise_linux:sntp, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:ntp-perl, p-cpe:/a:canonical:ubuntu_linux:ntp, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:ntp, p-cpe:/a:redhat:enterprise_linux:ntpdate, p-cpe:/a:centos:centos:ntpdate, p-cpe:/a:centos:centos:ntp-doc, p-cpe:/a:centos:centos:sntp, 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: 4/1/2016

Reference Information

CVE: CVE-2016-1549