Description
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.
Published: 2021-09-14
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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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.
History

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Subscriptions

Siemens Logo\! Cmr2020 Logo\! Cmr2020 Firmware Logo\! Cmr2040 Logo\! Cmr2040 Firmware Simatic Rtu3010c Simatic Rtu3010c Firmware Simatic Rtu3030c Simatic Rtu3030c Firmware Simatic Rtu3031c Simatic Rtu3031c Firmware Simatic Rtu3041c Simatic Rtu3041c Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: siemens

Published:

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

Reserved: 2021-07-21T00:00:00.000Z

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