CVE-2020-12526

TwinCAT OPC UA Server in versions up to 2.3.0.12 and IPC Diagnostics UA Server in versions up to 3.1.0.1 from Beckhoff Automation GmbH & Co. KG are vulnerable to denial of service attacks. The attacker needs to send several specifically crafted requests to the running OPC UA server. After some of these requests the OPC UA server is no longer responsive to any client. This is without effect to the real-time functionality of IPCs.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:beckhoff:ipc_diagnostics_ua_server:*:*:*:*:*:*:*:*
cpe:2.3:a:beckhoff:tf6100:*:*:*:*:*:*:*:*
cpe:2.3:a:beckhoff:twincat_opc_ua_server:*:*:*:*:*:*:*:*

History

25 May 2021, 15:02

Type Values Removed Values Added
CPE cpe:2.3:a:beckhoff:ipc_diagnostics_ua_server:*:*:*:*:*:*:*:*
cpe:2.3:a:beckhoff:twincat_opc_ua_server:*:*:*:*:*:*:*:*
cpe:2.3:a:beckhoff:tf6100:*:*:*:*:*:*:*:*
CWE CWE-20
CVSS v2 : unknown
v3 : unknown
v2 : 5.0
v3 : 5.3
References (CONFIRM) https://cert.vde.com/en-us/advisories/vde-2020-051 - (CONFIRM) https://cert.vde.com/en-us/advisories/vde-2020-051 - Third Party Advisory
References (CONFIRM) https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2021-001.pdf - (CONFIRM) https://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2021-001.pdf - Vendor Advisory

Information

Published : 2021-05-13 14:15

Updated : 2024-02-04 21:47


NVD link : CVE-2020-12526

Mitre link : CVE-2020-12526

CVE.ORG link : CVE-2020-12526


JSON object : View

Products Affected

beckhoff

  • tf6100
  • ipc_diagnostics_ua_server
  • twincat_opc_ua_server
CWE
CWE-20

Improper Input Validation