Siemens Simatic Uncontrolled Resource Consumption

high Tenable.ot Plugin ID 500360
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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 < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.

Solution

Refer to vendor advisory for Security Updates

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-508982.pdf

Plugin Details

Severity: High

ID: 500360

Version: 1.0

Type: local

Family: SCADA

Published: 5/27/2020

Updated: 5/27/2020

Risk Information

CVSS Score Source: CVE-2019-18336

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:2.3:o:siemens:simatic_s7-300_cpu_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_312_ifm_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_312_ifm:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_313_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_313:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_314_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_314:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_314_ifm_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_314_ifm:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_315_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_315:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_315-2_dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_315-2_dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_316-2_dp_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_316-2_dp:-:*:*:*:*:*:*:*, cpe:2.3:o:siemens:simatic_s7-300_cpu_318-2_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:siemens:simatic_s7-300_cpu_318-2:-:*:*:*:*:*:*:*, cpe:2.3:a:siemens:sinumerik_840d_sl:*:*:*:*:*:*:*:*

Patch Publication Date: 3/10/2020

Vulnerability Publication Date: 3/10/2020

Reference Information

CVE: CVE-2019-18336