A vulnerability has been identified in LOGO! CMR2020 (All versions < V2.2), LOGO! CMR2040 (All versions < V2.2), SIMATIC RTU3010C (All versions < V4.0.9), SIMATIC RTU3030C (All versions < V4.0.9), SIMATIC RTU3031C (All versions < V4.0.9), SIMATIC RTU3041C (All versions < V4.0.9). The underlying TCP/IP stack does not properly calculate the random numbers used as ISN (Initial Sequence Numbers). An adjacent attacker with network access to the LAN interface could interfere with traffic, spoof the connection and gain access to sensitive information.

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-23760 A vulnerability has been identified in LOGO! CMR2020 (All versions < V2.2), LOGO! CMR2040 (All versions < V2.2), SIMATIC RTU3010C (All versions < V4.0.9), SIMATIC RTU3030C (All versions < V4.0.9), SIMATIC RTU3031C (All versions < V4.0.9), SIMATIC RTU3041C (All versions < V4.0.9). The underlying TCP/IP stack does not properly calculate the random numbers used as ISN (Initial Sequence Numbers). An adjacent attacker with network access to the LAN interface could interfere with traffic, spoof the connection and gain access to sensitive information.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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cve-icon MITRE

Status: PUBLISHED

Assigner: siemens

Published:

Updated: 2024-08-04T01:16:03.873Z

Reserved: 2021-07-21T00:00:00

Link: CVE-2021-37186

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-09-14T11:15:25.850

Modified: 2024-11-21T06:14:49.183

Link: CVE-2021-37186

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses