CVE-2019-5176: Buffer Overflow
First published: Wed Mar 11 2020(Updated: )
An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 Firmware version 03.02.02(14). An attacker can send a specially crafted packet to trigger the parsing of this cache file.The destination buffer sp+0x40 is overflowed with the call to sprintf() for any gateway values that are greater than 512-len(‘/etc/config-tools/config_default_gateway number=0 state=enabled value=‘) in length. A gateway value of length 0x7e2 will cause the service to crash.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WAGO PFC200 Firmware | =03.02.02\(14\) | |
| WAGO PFC200 |
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Frequently Asked Questions
What is the severity of CVE-2019-5176?
The severity of CVE-2019-5176 is medium.
What is the affected software for CVE-2019-5176?
The affected software for CVE-2019-5176 is WAGO PFC 200 Firmware version 03.02.02(14).
How can an attacker exploit CVE-2019-5176?
An attacker can exploit CVE-2019-5176 by sending a specially crafted packet to trigger the parsing of the cache file in the iocheckd service 'I/O-Check' functionality of WAGO PFC 200 Firmware.
Is WAGO PFC200 vulnerable to CVE-2019-5176?
No, WAGO PFC200 is not vulnerable to CVE-2019-5176.
Are there any references for CVE-2019-5176?
Yes, you can refer to the following link for more information: [CVE-2019-5176](https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963).
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