CVE-2019-6842 MEDIUM

Published: 2019-10-29 | Last Modified: 2024-11-21 | Status: Modified

Description

A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon BMxCRA and 140CRA modules (all firmware versions), which could cause a Denial of Service attack on the PLC when upgrading the firmware with a missing web server image inside the package using FTP protocol.

Additional Descriptions (1)

Existe una vulnerabilidad CWE-755: Manejo inadecuado de condiciones excepcionales en los módulos Modicon M580, Modicon M340, Modicon BMxCRA y 140CRA (todas las versiones de firmware), que podría causar un ataque de denegación de servicio en el PLC al actualizar el firmware con una imagen de servidor web faltante dentro del paquete utilizando el protocolo FTP

CVSS Metrics

Base Score: 4.9 (MEDIUM)

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

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

Source: [email protected]

Type: Primary

Exploitability Score: 1.2

Impact Score: 3.6

Base Score: 4.0 (MEDIUM)

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

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

Source: [email protected]

Type: Primary

Exploitability Score: 8.0

Impact Score: 2.9

Weaknesses

Source	Type	Description
[email protected]	Secondary	en CWE-755
[email protected]	Primary	en CWE-755

Affected Products

Vendor	Product	Version	Update	Type
schneider-electric	modicon_m580_firmware	*	<built-in method update of dict object at 0x7e60ba2a59c0>	Operating System
schneider-electric	modicon_m340_firmware	*	<built-in method update of dict object at 0x7e60ba2a5440>	Operating System
schneider-electric	modicon_bmxcra_firmware	*	<built-in method update of dict object at 0x7e60a888c300>	Operating System
schneider-electric	modicon_140cra_firmware	*	<built-in method update of dict object at 0x7e60a888dd40>	Operating System

Affected Configurations

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:-:::::::*`

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_bmxcra_firmware::::::::`

Operator: OR

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

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_140cra_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_140cra:-:::::::*`

References

https://www.se.com/ww/en/download/document/SEVD-2019-281-02/
Source: [email protected]

Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2019-281-02/
Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory