CVE-2019-5636

Published: Nov 21, 2019

Modified: Sep 17, 2024

PUBLISHED

CVSS v3.1

5.3

MEDIUM

Description

When a Beckhoff TwinCAT Runtime receives a malformed UDP packet, the ADS Discovery Service shuts down. Note that the TwinCAT devices are still performing as normal. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).

Vendor	Product	Versions
Beckhoff	TwinCAT 2	affected `2304 - <= 2304`
Beckhoff	TwinCAT 3.1	affected `4204.0 - <= 4204.0`

Weaknesses (CWE)

CWE-404

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

References

https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-004.pdf

x_refsource_CONFIRM

https://blog.rapid7.com/2019/10/08/r7-2019-32-denial-of-service-vulnerabilities-in-beckhoff-twincat-plc-environment-fixed/

x_refsource_MISC

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now

CVE-2019-5636

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References