CVE-2021-22787 Information

Description

A CWE-20: Improper Input Validation vulnerability exists that could cause denial of service of the device when an attacker sends a specially crafted HTTP request to the web server of the device. Affected Product: Modicon M340 CPUs: BMXP34 (Versions prior to V3.40) Modicon M340 X80 Ethernet Communication Modules: BMXNOE0100 (H) BMXNOE0110 (H) BMXNOC0401 BMXNOR0200H RTU (All Versions) Modicon Premium Processors with integrated Ethernet (Copro): TSXP574634 TSXP575634 TSXP576634 (All Versions) Modicon Quantum Processors with Integrated Ethernet (Copro): 140CPU65xxxxx (All Versions) Modicon Quantum Communication Modules: 140NOE771x1 140NOC78x00 140NOC77101 (All Versions) Modicon Premium Communication Modules: TSXETY4103 TSXETY5103 (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-2021-257-02

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