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Schneider Electric Modicon M340 and BMXNOE0100/0110, BMXNOR0200H Exposure of Sensitive Information to an Unauthorized Actor (CVE-2024-12142)

high Tenable OT Security Plugin ID 502859

Synopsis

The remote OT asset is affected by a vulnerability.

Description

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor vulnerability exists that could cause information disclosure of restricted web page, modification of web page and denial of service when specific web pages are modified and restricted functions are invoked.

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Solution

BMXNOR0200H: Version SV1.70IR26 of BMXNOR0200H includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/download/document/BMXNOR0200H_FW/

Modicon M340 processors, BMXNOE0100/0110: Schneider Electric is establishing a remediation plan for all future versions of Modicon M340 processors BMXP34*, BMXNOE0100 and BMXNOE0110 that will include a fix for this vulnerability. We will update this document when the remediation is available. Until then, customers should immediately apply the following mitigations to reduce the risk of exploit:
- Set up network segmentation and implement a firewall to block all unauthorized access to FTP port 21/TCP on the devices.
- Disable FTP service via EcoStruxureTM Control Expert. This is disabled by default when a new application is created.
- Disable Web server service via EcoStruxureTM Control Expert. This is disabled by default when a new application is created.
- Configure the Access Control List following the recommendation on the 'Modicon Controllers System Cybersecurity'.
 For more information, see Schneider Electric’s security advisory SEVD-2023-010-05.

See Also

http://www.nessus.org/u?7a6e28ad

https://www.cisa.gov/news-events/ics-advisories/icsa-25-035-06

Plugin Details

Severity: High

ID: 502859

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 2/18/2025

Updated: 2/19/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.7

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

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

CVSS v4

Risk Factor: High

Base Score: 8.8

Threat Score: 6.8

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:schneider-electric:bmxnoe0100_firmware, cpe:/o:schneider-electric:bmxnoe0110_firmware, cpe:/o:schneider-electric:bmxnor0200h_firmware, cpe:/o:schneider-electric:modicon_m340_series_firmware

Required KB Items: Tenable.ot/Schneider

Exploit Ease: No known exploits are available

Patch Publication Date: 1/14/2025

Vulnerability Publication Date: 1/14/2025

Reference Information

CVE: CVE-2024-12142

CWE: 200

ICSA: 25-035-06