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Tenable Nessus Agent 6.x < 6.11 MITM Vulnerability During Linking (TNS-2017-11)

critical Nessus Plugin ID 102274

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Synopsis

The version of Nessus Agent installed on the remote host is affected by a MITM vulnerability.

Description

The version of Nessus Agent installed on the remote Windows host is 6.x prior to 6.11. It is, therefore, affected by a MITM vulnerability that can be exploited during the agent linking process. This is due to the fact that during an initial connection to Tenable.io or Nessus Manager when linking the agent, it does not verify the server certificate.

Solution

Upgrade to Tenable Nessus Agent version 6.11 or later.

See Also

https://www.tenable.com/security/tns-2017-11

Plugin Details

Severity: Critical

ID: 102274

File Name: tenable_nessus_agent_tns_2017_11.nasl

Version: 1.12

Type: local

Agent: windows, macosx, unix

Family: Misc.

Published: 8/8/2017

Updated: 2/18/2025

Configuration: Enable thorough checks

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2017-11506

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS Score Source: manual

Vulnerability Information

CPE: cpe:/a:tenable:nessus, cpe:/a:tenable:nessus_agent

Required KB Items: installed_sw/Tenable Nessus Agent

Exploit Ease: No known exploits are available

Patch Publication Date: 8/7/2017

Vulnerability Publication Date: 8/8/2017

Reference Information

CVE: CVE-2017-11506