Schneider Electric Modicon Improper Authentication (CVE-2018-7847)

critical Tenable OT Security Plugin ID 500328

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: Critical

ID: 500328

Version: 1.6

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 1/24/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2018-7847

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/o:schneider-electric:modicon_m580_series_firmware, cpe:/o:schneider-electric:modicon_m340_series_firmware, cpe:/o:schneider-electric:modicon_quantum_firmware, cpe:/o:schneider-electric:modicon_premium_firmware

Required KB Items: Tenable.ot/Schneider

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/22/2019

Vulnerability Publication Date: 5/22/2019

Reference Information

CVE: CVE-2018-7847

CWE: 284

Detections

Analytics