Detections
Analytics

Wago I/O-Check Service Out-of-bounds Write (CVE-2021-34569)

critical Tenable OT Security Plugin ID 500834

Synopsis

The remote OT asset is affected by a vulnerability.

Description

In WAGO I/O-Check Service in multiple products an attacker can send a specially crafted packet containing OS commands to crash the diagnostic tool and write memory.

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.

See Also

https://cert.vde.com/en/advisories/VDE-2020-036/

Plugin Details

Severity: Critical

ID: 500834

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 2/14/2023

Updated: 4/9/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2021-34569

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:wago:750-81xx_series_firmware, cpe:/o:wago:750-82xx_series_firmware, cpe:/o:wago:752-8303%2f8000-002_firmware

Required KB Items: Tenable.ot/Wago

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2022

Vulnerability Publication Date: 11/9/2022

Reference Information

CVE: CVE-2021-34569

CWE: 787