Schneider Electric Modicon M580 PLCs, BMENOR2200H and EVLink Pro AC Incorrect Calculation of Buffer Size (CVE-2024-11425)

high Tenable OT Security Plugin ID 502860

Synopsis

The remote OT asset is affected by a vulnerability.

Description

CWE-131: Incorrect Calculation of Buffer Size vulnerability exists that could cause Denial-of-Service of the product when an unauthenticated user is sending a crafted HTTPS packet to the webserver.

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

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Schneider Electric has identified the following remediations users can apply to reduce risk:

- Modicon M580 CPU (partnumbers BMEP* and BMEH*,excluding M580 CPU Safety): Version SV4.30 of Modicon M580 firmware includes a fix for this vulnerability and is available for download.
- Modicon M580 CPU Safety part numbers BMEP58-S and MEH58-S): Version SV4.21 of Modicon M580 firmware includes a fix for this vulnerability and is available for download.
- EVLink Pro AC: Version V1.3.10 of EVLink Pro AC firmware includes a fix for this vulnerability and is available here.

Users should use appropriate patching methodologies when applying these patches to their systems. Schneider Electric strongly recommends making use of back-ups and evaluating the impact of these patches in a testing and development environment or on an offline infrastructure. Contact Schneider Electric's Customer Care Center if assistance is needed for removing a patch.
For more information, see Schneider Electric’s security advisory SEVD-2023-010-05.

Plugin Details

Severity: High

ID: 502860

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: 4.4

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:schneider-electric:modicon_m580_bmeh582040c_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh582040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep582040h_firmware, cpe:/o:schneider-electric:modicon_m580_bmep586040c_firmware, cpe:/o:schneider-electric:modicon_m580_bmep582040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmenor2200h_firmware, cpe:/o:schneider-electric:modicon_m580_bmep581020_firmware, cpe:/o:schneider-electric:modicon_m580_bmep586040_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh586040_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh584040c_firmware, cpe:/o:schneider-electric:modicon_m580_bmep586040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh584040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmep583040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep582020_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh582040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmep581020h_firmware, cpe:/o:schneider-electric:modicon_m580_bmep584040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmep584040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep583020_firmware, cpe:/o:schneider-electric:modicon_m580_bmep582020h_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh584040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep585040c_firmware, cpe:/o:schneider-electric:modicon_m580_bmep582040_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh586040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh586040c_firmware, cpe:/o:schneider-electric:modicon_m580_bmep584020_firmware, cpe:/o:schneider-electric:modicon_m580_bmep585040_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-2024-11425

CWE: 131

ICSA: 25-035-04

Detections

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