Wago PFC100/200 Web-Based Management Authentication Regex Information Disclosure (CVE-2019-5134)

high Tenable OT Security Plugin ID 500821

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An exploitable regular expression without anchors vulnerability exists in the Web-Based Management (WBM) authentication functionality of WAGO PFC200 versions 03.00.39(12) and 03.01.07(13), and WAGO PFC100 version 03.00.39(12). A specially crafted authentication request can bypass regular expression filters, resulting in sensitive information disclosure.

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: 500821

Version: 1.3

Type: remote

Family: Tenable.ot

Published: 2/14/2023

Updated: 4/22/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2019-5134

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:wago:pfc100_firmware:03.00.39%2812%29, cpe:/o:wago:pfc200_firmware:03.00.39%2812%29, cpe:/o:wago:pfc200_firmware:03.01.07%2813%29

Required KB Items: Tenable.ot/Wago

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/11/2020

Vulnerability Publication Date: 3/11/2020

Reference Information

CVE: CVE-2019-5134

Detections

Analytics