Detections
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Schneider Electric Modicon Missing Authentication for Critical Function (CVE-2019-6820)

high Tenable OT Security Plugin ID 500856

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a specific Ethernet frame is received in all versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2

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?3db23f7c

Plugin Details

Severity: High

ID: 500856

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 3/1/2023

Updated: 1/24/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2019-6820

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: cpe:/o:schneider-electric:modicon_lmc058_series_firmware, cpe:/o:schneider-electric:modicon_lmc078_series_firmware, cpe:/o:schneider-electric:modicon_m100_series_firmware, cpe:/o:schneider-electric:modicon_m200_series_firmware, cpe:/o:schneider-electric:modicon_m221_series_firmware, cpe:/o:schneider-electric:modicon_m241_series_firmware, cpe:/o:schneider-electric:modicon_m251_series_firmware, cpe:/o:schneider-electric:modicon_m258_series_firmware

Required KB Items: Tenable.ot/Schneider

Exploit Ease: No known exploits are available

Patch Publication Date: 5/22/2019

Vulnerability Publication Date: 5/22/2019

Reference Information

CVE: CVE-2019-6820

CWE: 306