Siemens SIMATIC ET 200SP 2.0 < 2.1.6 and SIMATIC S7-1500 2.0 < 2.5 DOS

high Nessus Network Monitor Plugin ID 720164

Synopsis

Siemens SIMATIC ET 200SP and SIMATIC S7-1500 controllers vulnerable to denial-of-service (DOS) attack.

Description

A vulnerability has been identified in SIMATIC ET 200SP Open Controller (All versions >= V2.0 < V2.1.6), SIMATIC S7-1500 Software Controller (All versions >= V2.0 and < V2.5). An attacker can cause a denial-of-service condition on the network stack by sending a large number of specially crafted packets to the PLC. The PLC will lose its ability to communicate over the network. This vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no privileges and no user interaction. An attacker could use this vulnerability to compromise availability of the network connectivity.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

Plugin Details

Severity: High

ID: 720164

Family: SCADA

Published: 5/8/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 10/9/2018

Vulnerability Publication Date: 10/9/2018

Reference Information

CVE: CVE-2018-13805

Detections

Analytics