Siemens SIMATIC S7-1500 Insufficient Entropy (CVE-2014-2251)

high Tenable OT Security Plugin ID 500041

Synopsis

The remote OT asset is affected by a vulnerability.

Description

The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors.

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: High

ID: 500041

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 12/26/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

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

CVSS Score Source: CVE-2014-2251

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:H/I:N/A:N

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

Vulnerability Information

CPE: cpe:/o:siemens:simatic_s7-1500_cpu_firmware, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:1.1.1, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:1.1.0, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:1.0.1

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 3/16/2014

Vulnerability Publication Date: 3/16/2014

Reference Information

CVE: CVE-2014-2251

Detections

Analytics