Siemens OPC UA SDK in SIMATIC S7 Integer Overflow (CVE-2023-28831)

high Tenable OT Security Plugin ID 501684

Synopsis

The remote OT asset is affected by a vulnerability.

Description

The ANSI C OPC UA SDK contains an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.

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: 501684

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 9/25/2023

Updated: 11/26/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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 Score Source: CVE-2023-28831

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_s7-1500_et_200pro_cpu_firmware:2.9.7, cpe:/o:siemens:simatic_drive_controller_cpu_firmware:3.0.3, cpe:/o:siemens:siplus_s7-1500_cpu_firmware:2.9.7, cpe:/o:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware:30.0.0, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:3.0.3, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:2.9.7, cpe:/o:siemens:siplus_s7-1500_cpu_firmware:3.0.3, cpe:/o:siemens:simatic_drive_controller_cpu_firmware:2.9.7, cpe:/o:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware:21.9.7, cpe:/o:siemens:siplus_et_200sp_cpu_firmware:2.9.7

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 9/12/2023

Vulnerability Publication Date: 9/12/2023

Reference Information

CVE: CVE-2023-28831

CWE: 190

ICSA: 23-348-06

Detections

Analytics