Detections
Analytics

Siemens S7-300 Series PLC CPU Firmware <= 3.2.11 DoS

high Nessus Network Monitor Plugin ID 32

Synopsis

A Siemens S7-300 programmable logic controller (PLC) has been detected which is vulnerable to a Denial of Service (DoS) attack vector.

Description

Siemens S7-300 PLC central processing units (CPUs) contain an unspecified flaw that may allow a remote attacker to use a specially crafted packet to cause the device to enter defect mode until a cold restart is performed.

Solution

Upgrade the firmware to version 3.2.12 or later.

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-818183.pdf,http://www.industry.siemens.com/topics/global/en/industrial-security/news-alerts/Pages/alerts.aspx

Plugin Details

Severity: High

ID: 32

Family: SCADA

Published: 5/21/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

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

CPE: cpe:/h:siemens:simatic_s7_300_cpu

Patch Publication Date: 6/8/2016

Vulnerability Publication Date: 6/8/2016

Reference Information

CVE: CVE-2016-3949

BID: 91133