CVE-2021-22708 HIGH

Published: 2021-07-21 | Last Modified: 2024-11-21 | Status: Modified

Description

A CWE-347: Improper Verification of Cryptographic Signature vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could allow an attacker to craft a malicious firmware package and bypass the signature verification mechanism.

Additional Descriptions (1)

A CWE-347: Se presenta una vulnerabilidad de Comprobación Inapropiada de la Firma Criptográfica en EVlink City (EVC1S22P4 / EVC1S7P4 todas las versiones anteriores a R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 todas las versiones anteriores a R8 V3.4.0.1), y EVlink Smart Wallbox (EVB1A todas las versiones anteriores a R8 V3.4.0.1 ) que podría permitir a un atacante diseñar un paquete de firmware malicioso y omitir el mecanismo de comprobación de la firma

CVSS Metrics

Base Score: 7.2 (HIGH)

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

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

Source: [email protected]

Type: Primary

Exploitability Score: 1.2

Impact Score: 5.9

Base Score: 6.5 (MEDIUM)

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

Access Vector	NETWORK
Access Complexity	LOW
Authentication	SINGLE
Confidentiality Impact	PARTIAL
Integrity Impact	PARTIAL
Availability Impact	PARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 8.0

Impact Score: 6.4

Weaknesses

Source	Type	Description
[email protected]	Secondary	en CWE-347

Affected Products

Vendor	Product	Version	Update	Type
schneider-electric	evlink_city_evc1s22p4_firmware	*	<built-in method update of dict object at 0x7e6108405340>	Operating System
schneider-electric	evlink_city_evc1s7p4_firmware	*	<built-in method update of dict object at 0x7e60a8894f40>	Operating System
schneider-electric	evlink_parking_evw2_firmware	*	<built-in method update of dict object at 0x7e60a8897880>	Operating System
schneider-electric	evlink_parking_evf2_firmware	*	<built-in method update of dict object at 0x7e6108405500>	Operating System
schneider-electric	evlink_parking_ev.2_firmware	*	<built-in method update of dict object at 0x7e6108407480>	Operating System
schneider-electric	evlink_smart_wallbox_evb1a_firmware	*	<built-in method update of dict object at 0x7e60bafafe80>	Operating System

Affected Configurations

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:evlink_city_evc1s22p4_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:evlink_city_evc1s22p4:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:evlink_city_evc1s7p4_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:evlink_city_evc1s7p4:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:evlink_parking_evw2_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:evlink_parking_evw2:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:evlink_parking_evf2_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:evlink_parking_evf2:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:evlink_parking_ev.2_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:evlink_parking_ev.2:-:::::::*`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:o:schneider-electric:evlink_smart_wallbox_evb1a_firmware::::::::`

Operator: OR

Vulnerable	CPE
No	`cpe:2.3:h:schneider-electric:evlink_smart_wallbox_evb1a:-:::::::*`

References

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-06
Source: [email protected]

Vendor Advisory
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-06
Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory