CVE-2019-5177: 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). The destination buffer sp+0x440 is overflowed with the call to sprintf() for any domainname values that are greater than 1024-len(‘/etc/config-tools/edit_dns_server domain-name=‘) in length. A domainname value of length 0x3fa 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-2019-5177?
The severity of CVE-2019-5177 is medium with a CVSS score of 5.5.
What is the affected software for CVE-2019-5177?
The affected software for CVE-2019-5177 is WAGO PFC 200 Firmware version 03.02.02(14).
How does CVE-2019-5177 affect WAGO PFC 200 Firmware?
CVE-2019-5177 affects WAGO PFC 200 Firmware version 03.02.02(14) by causing a stack buffer overflow vulnerability in the iocheckd service 'I/O-Check' functionality.
Is WAGO PFC200 vulnerable to CVE-2019-5177?
No, WAGO PFC200 is not vulnerable to CVE-2019-5177.
How can I fix CVE-2019-5177?
To fix CVE-2019-5177, it is recommended to update to a version of WAGO PFC 200 Firmware that is not affected by the vulnerability.
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