CVE-2019-5166: Buffer Overflow

Published Mar 10, 2020

Updated

An exploitable stack buffer overflow vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 version 03.02.02(14). A specially crafted XML cache file written to a specific location on the device can cause a stack buffer overflow, resulting in 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 10, 2020

CVE Published

via MITRE·10:25 PM

Data Sourced

via MITRE·10:25 PM

DescriptionWeakness

Frequently Asked Questions

What is CVE-2019-5166?

CVE-2019-5166 is a stack buffer overflow vulnerability that exists in the iocheckd service 'I/O-Check' functionality of WAGO PFC 200 version 03.02.02(14).

What is the severity of CVE-2019-5166?

CVE-2019-5166 has a severity rating of 7.8 (High).

How does CVE-2019-5166 work?

An attacker can exploit CVE-2019-5166 by writing a specially crafted XML cache file to a specific location on the device, causing a stack buffer overflow and potentially executing code.

Which software versions are affected by CVE-2019-5166?

WAGO PFC 200 version 03.02.02(14) is affected by CVE-2019-5166.

Is WAGO PFC200 vulnerable to CVE-2019-5166?

Yes, WAGO PFC200 firmware version 03.02.02(14) is vulnerable to CVE-2019-5166.