CVE-2018-7856 HIGH

Published: 2019-05-22 | Last Modified: 2026-06-17 | Status: Modified

Description

A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible denial of Service when writing invalid memory blocks to the controller over Modbus.

Additional Descriptions (1)

Una CWE-248: Existe una vulnerabilidad de Excepción no Detectada en todas las versiones de Modicon M580, Modicon M340, Modicon Quantum y Modicon Premium, que podría generar una posible Denegación de Servicio cuando se escriben bloques de memoria no válidos hacia el controlador sobre protocolo Modbus.

CVSS Metrics

Base Score: 7.5 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector	NETWORK
Attack Complexity	LOW
Privileges Required	NONE
User Interaction	NONE
Scope	UNCHANGED
Confidentiality Impact	NONE
Integrity Impact	NONE
Availability Impact	HIGH

Source: [email protected]

Type: Primary

Exploitability Score: 3.9

Impact Score: 3.6

Base Score: 5.0 (MEDIUM)

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector	NETWORK
Access Complexity	LOW
Authentication	NONE
Confidentiality Impact	NONE
Integrity Impact	NONE
Availability Impact	PARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 10.0

Impact Score: 2.9

Weaknesses

Source	Type	Description
[email protected]	Primary	en CWE-754

Affected Products

Vendor	Product	Version	Update	Type
schneider-electric	modicon_premium_firmware	-	<built-in method update of dict object at 0x7e60e8875b40>	Operating System
schneider-electric	modicon_quantum_firmware	-	<built-in method update of dict object at 0x7e60e8876700>	Operating System
schneider-electric	modicon_m340_firmware	*	<built-in method update of dict object at 0x7e60bafaca00>	Operating System
schneider-electric	modicon_m580_firmware	*	<built-in method update of dict object at 0x7e61118a6d00>	Operating System

Affected Configurations

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_premium_firmware:-:::::::*`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_premium:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_quantum_firmware:-:::::::*`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_quantum:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m340_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m340:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m580_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m580:-:::::::*`

References

https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/
Source: [email protected]

Mitigation Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767
Source: [email protected]

Exploit Third Party Advisory
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/
Source: af854a3a-2127-422b-91ae-364da2661108

Mitigation Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767
Source: af854a3a-2127-422b-91ae-364da2661108

Exploit Third Party Advisory