IM
IronMonkey Threat Research

CVE-2021-35533 HIGH

Published: 2021-11-26 | Last Modified: 2024-11-21 | Status: Modified

Description

Improper Input Validation vulnerability in the APDU parser in the Bidirectional Communication Interface (BCI) IEC 60870-5-104 function of Hitachi Energy RTU500 series allows an attacker to cause the receiving RTU500 CMU of which the BCI is enabled to reboot when receiving a specially crafted message. By default, BCI IEC 60870-5-104 function is disabled (not configured). This issue affects: Hitachi Energy RTU500 series CMU Firmware version 12.0.* (all versions); CMU Firmware version 12.2.* (all versions); CMU Firmware version 12.4.* (all versions).

Additional Descriptions (1)

Una vulnerabilidad de comprobación de entrada inapropiada en el analizador de APDU en la función IEC 60870-5-104 de la interfaz de comunicación bidireccional (BCI) de la serie RTU500 de Hitachi Energy permite a un atacante causar el reinicio de la CMU RTU500 receptora en la que está habilitado el BCI cuando recibe un mensaje especialmente diseñado. Por defecto, la función BCI IEC 60870-5-104 está deshabilitada (no configurada). Este problema afecta a: Firmware de la CMU de la serie Hitachi Energy RTU500, versión 12.0.* (todas las versiones); Firmware de la CMU, versión 12.2.* (todas las versiones); Firmware de la CMU, versión 12.4.* (todas las versiones)

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 VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 3.9

Impact Score: 3.6

Base Score: 7.1 (HIGH)

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

Access VectorNETWORK
Access ComplexityMEDIUM
AuthenticationNONE
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactCOMPLETE

Source: [email protected]

Type: Primary

Exploitability Score: 8.6

Impact Score: 6.9

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-20
[email protected] Primary
en CWE-20

Affected Products

Vendor Product Version Update Type
hitachienergy rtu500_firmware 12.0 <built-in method update of dict object at 0x72a9b0d8c440> Operating System
hitachienergy rtu500_firmware 12.2 <built-in method update of dict object at 0x72a9a3092a40> Operating System
hitachienergy rtu500_firmware 12.4 <built-in method update of dict object at 0x72a951fedd80> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:hitachienergy:rtu500_firmware:12.0:*:*:*:*:*:*:*
Yes cpe:2.3:o:hitachienergy:rtu500_firmware:12.2:*:*:*:*:*:*:*
Yes cpe:2.3:o:hitachienergy:rtu500_firmware:12.4:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:hitachienergy:rtu500:-:*:*:*:*:*:*:*
Notification
Message here