CVE-2021-35533

Specially Crafted IEC 60870-5-104 Packet Vulnerability in RTU500 series

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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).

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)

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-28 CVE Reserved
2021-11-26 CVE Published
2024-08-02 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000063&LanguageCode=en&DocumentPartId=&Action=Launch	2023-05-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Hitachienergy Search vendor "Hitachienergy"	Rtu500 Firmware Search vendor "Hitachienergy" for product "Rtu500 Firmware"	12.0 Search vendor "Hitachienergy" for product "Rtu500 Firmware" and version "12.0"	-	Affected	in	Hitachienergy Search vendor "Hitachienergy"	Rtu500 Search vendor "Hitachienergy" for product "Rtu500"	-	-	Safe
Hitachienergy Search vendor "Hitachienergy"	Rtu500 Firmware Search vendor "Hitachienergy" for product "Rtu500 Firmware"	12.2 Search vendor "Hitachienergy" for product "Rtu500 Firmware" and version "12.2"	-	Affected	in	Hitachienergy Search vendor "Hitachienergy"	Rtu500 Search vendor "Hitachienergy" for product "Rtu500"	-	-	Safe
Hitachienergy Search vendor "Hitachienergy"	Rtu500 Firmware Search vendor "Hitachienergy" for product "Rtu500 Firmware"	12.4 Search vendor "Hitachienergy" for product "Rtu500 Firmware" and version "12.4"	-	Affected	in	Hitachienergy Search vendor "Hitachienergy"	Rtu500 Search vendor "Hitachienergy" for product "Rtu500"	-	-	Safe