CVE Vulnerability

CVE-2019-5637

When Beckhoff TwinCAT is configured to use the Profinet driver, a denial of service of the controller could be reached by sending a malformed UDP packet to the device. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://blog.rapid7.com/2019/10/08/r7-2019-32-denial-of-service-vulnerabilities-in-beckhoff-twincat-plc-environment-fixed/ Exploit Third Party Advisory
https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-007.pdf Mitigation Vendor Advisory
Configurations

Configuration 1
Information

Published : 2019-11-21 08:15

Updated : 2020-02-04 11:15

NVD link : CVE-2019-5637

Mitre link : CVE-2019-5637

Products Affected

Beckhoff

Twincat

Twincat Cx5140

CWE
CWE-369

Divide By Zero