Siemens S7-400 Packet Handling Remote DOS

high Nessus Network Monitor Plugin ID 146

Synopsis

A Siemens S7-400 programmable logic controller (PLC) has been detected which contains a flaw that could allow a DOS attack on port 80/TCP.

Description

Siemens S7-400 central processing units (CPUs) before version 6.0.6 for V6 or before version 7.0.2 for V7 have a vulnerability which could allow a remote attacker to cause a Denial of Service condition by sending specially crafted packets to port 80/TCP.

Solution

Upgrade the firmware to 6.0.6 for Siemens S7-400 V6 or to 7.0.2 for Siemens S7-400 V7.

Plugin Details

Severity: High

ID: 146

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:/o:siemens:simatic_s7-400_cpu_firmware

Patch Publication Date: 12/17/2016

Vulnerability Publication Date: 12/17/2016

Reference Information

CVE: CVE-2016-9158

BID: 94820

Detections

Analytics