Detections
Analytics

Siemens S7-300 Protection-level 2 Configuration Unspecified Remote Credential Disclosure

medium Nessus Network Monitor Plugin ID 152

Synopsis

A Siemens S7-300 programmable logic controller (PLC) has been detected which can allow a remote attacker to obtain credentials from the PLC

Description

Siemens S7-300 central processing units (CPUs) for all versions including version 3.2.12 have a vulnerability which could allow a remote attacker to obtain credentials from the PLC if protection-level 2 is configured on the affected devices.

Solution

Apply protection-level 3 (Read/Write protection). Apply cell protection concept. Apply Defense-in-Depth concept. Use VPN for protecting network communication between cells.

See Also

https://cert-portal.siemens.com/productcert/pdf/ssa-731239.pdf

Plugin Details

Severity: Medium

ID: 152

Family: SCADA

Published: 5/21/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: cpe:/o:siemens:simatic_s7-300_cpu_firmware

Patch Publication Date: 12/9/2016

Vulnerability Publication Date: 12/9/2016

Reference Information

CVE: CVE-2016-9159

BID: 94820