The Snap7 server component in version 1.4.1, when an attacker sends a crafted packet with COTP protocol the last-data-unit flag set to No and S7 writes a var function, the Snap7 server will be crashed.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-10-28T13:51:44

Updated: 2024-08-04T14:51:10.739Z

Reserved: 2020-08-13T00:00:00

Link: CVE-2020-22552

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-10-28T14:15:12.253

Modified: 2024-11-21T05:13:18.460

Link: CVE-2020-22552

cve-icon Redhat

No data.