Detections
Analytics

Schneider Electric Modicon Improper Check for Unusual or Exceptional Conditions (CVE-2018-7833)

high Tenable OT Security Plugin ID 500242

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable

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.

See Also

http://www.nessus.org/u?f5951abc

Plugin Details

Severity: High

ID: 500242

Version: 1.6

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 11/30/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2018-7833

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:schneider-electric:modicom_bmxnor0200h_firmware, cpe:/o:schneider-electric:modicom_bmxnor0200_firmware, cpe:/o:schneider-electric:modicom_m340_firmware, cpe:/o:schneider-electric:modicom_premium_firmware, cpe:/o:schneider-electric:modicom_quantum_firmware

Required KB Items: Tenable.ot/Schneider

Exploit Ease: No known exploits are available

Patch Publication Date: 12/17/2018

Vulnerability Publication Date: 12/17/2018

Reference Information

CVE: CVE-2018-7833

CWE: 754