Siemens Sinumerik Uncontrolled Resource Consumption

high Tenable.ot Plugin ID 500462
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Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.

Solution

Refer to vendor advisory for Security Updates

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-492828.pdf

Plugin Details

Severity: High

ID: 500462

Version: 1.0

Type: local

Family: SCADA

Published: 8/10/2021

Updated: 8/10/2021

Risk Information

CVSS Score Source: CVE-2020-15783

CVSS v2

Risk Factor: High

Base Score: 7.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3

Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:2.3:o:siemens:sinumerik_840d_sl_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_314_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_315-2_dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_317-2_dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_312_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_315-2_pn_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_315f-2_dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_315f-2_pn_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_317-2_pn_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_317f-2_dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_317f-2_pn_firmware:*:*:*:*:*:*:*:*

Patch Publication Date: 11/12/2020

Vulnerability Publication Date: 11/12/2020

Reference Information

CVE: CVE-2020-15783