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Tenable Nessus Agent < 8.3.1 Multiple Vulnerabilities (TNS-2021-15)

medium Nessus Plugin ID 153159

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Synopsis

An instance of Nessus Agent installed on the remote system is affected by a multiple vulnerabilities.

Description

According to its self-reported version, the Tenable Nessus agent running on the remote host is prior to 8.3.1. It is, therefore, affected by multiple privilege escalation vulnerabilities which could allow an allow an authenticated, local administrator to run specific executables on the Nessus Agent host.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Tenable Nessus Agent version 8.3.1 or later.

See Also

https://www.tenable.com/security/tns-2021-15

Plugin Details

Severity: Medium

ID: 153159

File Name: tenable_nessus_agent_tns_2021_15.nasl

Version: 1.6

Type: local

Agent: windows, macosx, unix

Family: Misc.

Published: 9/9/2021

Updated: 11/9/2023

Configuration: Enable thorough checks

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-20118

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: cpe:/a:tenable:nessus_agent

Required KB Items: installed_sw/Tenable Nessus Agent

Exploit Ease: No known exploits are available

Patch Publication Date: 9/7/2021

Vulnerability Publication Date: 9/7/2021

Reference Information

CVE: CVE-2021-20117, CVE-2021-20118

IAVA: 2021-A-0409-S