CVE-2021-22792 Information

Description

A CWE-476: NULL Pointer Dereference vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file exists in Modicon M580 CPU (part numbers BMEP and BMEH all versions) Modicon M340 CPU (part numbers BMXP34 all versions) Modicon MC80 (part numbers BMKC80 all versions) Modicon Momentum Ethernet CPU (part numbers 171CBU all versions) PLC Simulator for EcoStruxureª Control Expert including all Unity Pro versions (former name of EcoStruxureª Control Expert all versions) PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert all versions) Modicon Quantum CPU (part numbers 140CPU all versions) Modicon Premium CPU (part numbers TSXP5 all versions).

CVSS Vector

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

Reference

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-07 https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-04

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5