The connection establishment algorithm found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versions 33 and prior does not sufficiently manage its control flow during execution, creating an infinite loop. This may allow an attacker to send specially crafted CIP packet requests to a controller, which may cause denial-of-service conditions in communications with other products.
Advisories
Source ID Title
EUVD EUVD EUVD-2020-28138 The connection establishment algorithm found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versions 33 and prior does not sufficiently manage its control flow during execution, creating an infinite loop. This may allow an attacker to send specially crafted CIP packet requests to a controller, which may cause denial-of-service conditions in communications with other products.
Fixes

Solution

Rockwell Automation recommends affected users apply firmware v33.011 or later. For more information see the Rockwell Automation advisory (login required).


Workaround

No workaround given by the vendor.

History

Thu, 17 Apr 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2025-04-17T15:51:02.651Z

Reserved: 2020-01-14T00:00:00.000Z

Link: CVE-2020-6998

cve-icon Vulnrichment

Updated: 2024-08-04T09:18:02.993Z

cve-icon NVD

Status : Modified

Published: 2022-07-27T21:15:08.297

Modified: 2025-04-17T16:15:21.730

Link: CVE-2020-6998

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.