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Linux Distros Unpatched Vulnerability : CVE-2015-7973

medium Nessus Plugin ID 218721

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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.

 - NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network. (CVE-2015-7973)

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-2015-7973

Plugin Details

Severity: Medium

ID: 218721

File Name: unpatched_CVE_2015_7973.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 9/3/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2015-7973

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:5, 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, 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:sntp, p-cpe:/a:centos:centos:ntp-doc, 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: 1/1/2016

Reference Information

CVE: CVE-2015-7973