CVE-2020-7536 HIGH

Published: 2020-12-11 | Last Modified: 2024-11-21 | Status: Modified

Description

A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.

Additional Descriptions (1)

Una CWE-754: Se presenta una vulnerabilidad de Comprobación Inapropiada de Condiciones Inusuales o Excepcionales en Modicon M340 CPUs (BMXP34* versiones anteriores a V3.30) Módulos Modicon M340 Communication Ethernet (BMXNOE0100 (H) versiones anteriores a V3.4, BMXNOE0110 (H) versiones anteriores a V6.6, BMXNOR0200H todas las versiones), lo que podría causar que el dispositivo no sea accesible cuando se modifican los parámetros de red a través de SNMP

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: 7.8 (HIGH)

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

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

Source: [email protected]

Type: Primary

Exploitability Score: 10.0

Impact Score: 6.9

Weaknesses

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

Affected Products

Vendor	Product	Version	Update	Type
schneider-electric	modicon_m340_bmxp341000_firmware	*	<built-in method update of dict object at 0x7e60ba04f400>	Operating System
schneider-electric	modicon_m340_bmxp342000_firmware	*	<built-in method update of dict object at 0x7e611116dcc0>	Operating System
schneider-electric	modicon_m340_bmxp3420102_firmware	*	<built-in method update of dict object at 0x7e60ba04d540>	Operating System
schneider-electric	modicon_m340_bmxp3420102cl_firmware	*	<built-in method update of dict object at 0x7e60bb995b40>	Operating System
schneider-electric	modicon_m340_bmxp342020_firmware	*	<built-in method update of dict object at 0x7e60ba04edc0>	Operating System
schneider-electric	modicon_m340_bmxp3420302_firmware	*	<built-in method update of dict object at 0x7e60ba04d700>	Operating System
schneider-electric	modicon_m340_bmxp3420302cl_firmware	*	<built-in method update of dict object at 0x7e60bb9956c0>	Operating System
schneider-electric	bmxnoe0100_firmware	*	<built-in method update of dict object at 0x7e60bb996640>	Operating System
schneider-electric	bmxnoe0110_firmware	*	<built-in method update of dict object at 0x7e60bb995cc0>	Operating System
schneider-electric	bmxnor0200h_firmware	*	<built-in method update of dict object at 0x7e60ba04c640>	Operating System

Affected Configurations

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m340_bmxp341000:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m340_bmxp342000:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420102:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102cl_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420102cl:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m340_bmxp342020_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420302:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302cl_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420302cl:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:bmxnoe0100_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:bmxnoe0100:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:bmxnoe0110_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:bmxnoe0110:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:bmxnor0200h_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:bmxnor0200h:-:::::::*`

References

https://security.cse.iitk.ac.in/responsible-disclosure
Source: [email protected]

Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-343-07/
Source: [email protected]

Vendor Advisory
https://security.cse.iitk.ac.in/responsible-disclosure
Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-343-07/
Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory