Rockwell Automation MicroLogix 1400 Version 21.6 and below may allow a remote unauthenticated attacker to send a specially crafted Modbus packet allowing the attacker to retrieve or modify random values in the register. If successfully exploited, this may lead to a buffer overflow resulting in a denial-of-service condition. The FAULT LED will flash RED and communications may be lost. Recovery from denial-of-service condition requires the fault to be cleared by the user.
Advisories
Source ID Title
EUVD EUVD EUVD-2021-9795 Rockwell Automation MicroLogix 1400 Version 21.6 and below may allow a remote unauthenticated attacker to send a specially crafted Modbus packet allowing the attacker to retrieve or modify random values in the register. If successfully exploited, this may lead to a buffer overflow resulting in a denial-of-service condition. The FAULT LED will flash RED and communications may be lost. Recovery from denial-of-service condition requires the fault to be cleared by the user.
Fixes

Solution

No solution given by the vendor.


Workaround

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History

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cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2024-08-03T18:51:07.020Z

Reserved: 2021-01-05T00:00:00

Link: CVE-2021-22659

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-03-25T16:15:14.040

Modified: 2024-11-21T05:50:25.370

Link: CVE-2021-22659

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses