Vulnerability Description
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). 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. The destination buffer sp+0x440 is overflowed with the call to sprintf() for any subnetmask values that are greater than 1024-len(‘/etc/config-tools/config_interfaces interface=X1 state=enabled subnet-mask=‘) in length. A subnetmask value of length 0x3d9 will cause the service to crash.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wago | Pfc200 Firmware | 03.02.02\(14\) |
| Wago | Pfc200 | - |
Related Weaknesses (CWE)
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963ExploitTechnical DescriptionThird Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963ExploitTechnical DescriptionThird Party Advisory
FAQ
What is CVE-2019-5181?
CVE-2019-5181 is a vulnerability with a CVSS score of 7.8 (HIGH). 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). A specially crafted XML cache f...
How severe is CVE-2019-5181?
CVE-2019-5181 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-5181?
Check the references section above for vendor advisories and patch information. Affected products include: Wago Pfc200 Firmware, Wago Pfc200.