Schneider Electric Quantum Ethernet Network Module Improper Check for Unusual or Exceptional Conditions (CVE-2020-7477)

high Tenable OT Security Plugin ID 501195

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Quantum Ethernet Network module 140NOE771x1 (Versions 7.0 and prior), Quantum processors with integrated Ethernet 140CPU65xxxxx (all Versions), and Premium processors with integrated Ethernet (all Versions), which could cause a Denial of Service when sending a specially crafted command 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: High

ID: 501195

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 6/29/2023

Updated: 8/22/2023

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-2020-7477

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:140cpu65150_firmware, cpe:/o:schneider-electric:140cpu65160_firmware, cpe:/o:schneider-electric:140cpu65160s_firmware, cpe:/o:schneider-electric:140cpu65260_firmware, cpe:/o:schneider-electric:140cpu65860_firmware, cpe:/o:schneider-electric:140cpu67060_firmware, cpe:/o:schneider-electric:140cpu67160_firmware, cpe:/o:schneider-electric:140cpu67160s_firmware, cpe:/o:schneider-electric:140cpu67260_firmware, cpe:/o:schneider-electric:140cpu67261_firmware, cpe:/o:schneider-electric:140cpu67861_firmware, cpe:/o:schneider-electric:140noe77101_firmware, cpe:/o:schneider-electric:140noe77111_firmware, cpe:/o:schneider-electric:tsxh5724m_firmware, cpe:/o:schneider-electric:tsxh5744m_firmware, cpe:/o:schneider-electric:tsxp57104m_firmware, cpe:/o:schneider-electric:tsxp57154m_firmware, cpe:/o:schneider-electric:tsxp571634m_firmware, cpe:/o:schneider-electric:tsxp57204m_firmware, cpe:/o:schneider-electric:tsxp57254m_firmware, cpe:/o:schneider-electric:tsxp572634m_firmware, cpe:/o:schneider-electric:tsxp57304m_firmware, cpe:/o:schneider-electric:tsxp573634m_firmware, cpe:/o:schneider-electric:tsxp57454m_firmware, cpe:/o:schneider-electric:tsxp574634m_firmware, cpe:/o:schneider-electric:tsxp57554m_firmware, cpe:/o:schneider-electric:tsxp575634m_firmware, cpe:/o:schneider-electric:tsxp576634m_firmware

Required KB Items: Tenable.ot/Schneider

Exploit Ease: No known exploits are available

Patch Publication Date: 3/23/2020

Vulnerability Publication Date: 3/23/2020

Reference Information

CVE: CVE-2020-7477

CWE: 754

Detections

Analytics