CVE-2019-5184: Double Free

Published Mar 23, 2020

Updated

An exploitable double free vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC 200. A specially crafted XML cache file written to a specific location on the device can cause a heap pointer to be freed twice, resulting in a denial of service and potentially code execution. An attacker can send a specially crafted packet to trigger the parsing of this cache file.

Affected Software

2 affected components

WAGO PFC200 Firmware=03.02.02\(14\)

WAGO PFC200

Event History

Mar 23, 2020

CVE Published

via MITRE·01:22 PM

Data Sourced

via MITRE·01:22 PM

DescriptionWeakness

Frequently Asked Questions

What is CVE-2019-5184?

CVE-2019-5184 is an exploitable double free vulnerability in the iocheckd service I/O-Check functionality of WAGO PFC 200.

What is the severity of CVE-2019-5184?

CVE-2019-5184 has a severity rating of 7.8 (High).

Which software is affected by CVE-2019-5184?

WAGO PFC200 Firmware version 03.02.02(14) is affected by CVE-2019-5184.

How does CVE-2019-5184 work?

An attacker can create a specially crafted XML cache file in a specific location on the device, which triggers a double free vulnerability in the iocheckd service, leading to denial of service and potentially code execution.

Is WAGO PFC200 vulnerable to CVE-2019-5184?

WAGO PFC200 is vulnerable to CVE-2019-5184 if it is running firmware version 03.02.02(14).