Linux Distros Unpatched Vulnerability : CVE-2018-5407

medium Nessus Plugin ID 221863

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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.

- Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'. (CVE-2018-5407)

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

Solution

There is no known solution at this time.

Plugin Details

Severity: Medium

ID: 221863

File Name: unpatched_CVE_2018_5407.nasl

Version: 1.4

Type: Local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 11/5/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 95.09

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.7

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

CVSS Score Source: CVE-2018-5407

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.5

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

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

Vulnerability Information

CPE: cpe:/a:redhat:enterprise_linux:8, cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:compat-openssl10, p-cpe:/a:redhat:enterprise_linux:compat-openssl10

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

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 4/16/2018

Reference Information

CVE: CVE-2018-5407

Detections

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