Detections
Analytics

Siemens S7-1200 Series PLC CPU User Program Block Protection Remote Bypass

medium Nessus Network Monitor Plugin ID 142

Synopsis

A Siemens S7-1200 programmable logic controller (PLC) has been detected which contains an unspecified flaw that may allow a remote attacker to circumvent user program block protection.

Description

Siemens S7-1200 PLC central processing units (CPUs) contain a flaw that may allow a remote attacker to circumvent user program block protection.

Solution

Upgrade the firmware to version 4.0 or later.

See Also

http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-833048.pdf,http://www.industry.siemens.com/topics/global/en/industrial-security/news-alerts/Pages/alerts.aspx

Plugin Details

Severity: Medium

ID: 142

Family: SCADA

Published: 5/21/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/h:siemens:simatic_s7_1200_cpu

Patch Publication Date: 3/16/2016

Vulnerability Publication Date: 3/16/2016

Reference Information

CVE: CVE-2016-2846

BID: 84346