Vulnerability Description
Wago 750 Series PLCs with firmware version 10 and prior include a remote attack may take advantage of an improper implementation of the 3 way handshake during a TCP connection affecting the communications with commission and service tools. Specially crafted packets may also be sent to Port 2455/TCP/IP, used in Codesys management software, which may result in a denial-of-service condition of communications with commissioning and service tools.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wago | 750-880 Firmware | <= 10 |
| Wago | 750-880 | - |
| Wago | 750-881 Firmware | <= 10 |
| Wago | 750-881 | - |
| Wago | 750-852 Firmware | <= 10 |
| Wago | 750-852 | - |
| Wago | 750-882 Firmware | <= 10 |
| Wago | 750-882 | - |
| Wago | 750-885 Firmware | <= 10 |
| Wago | 750-885 | - |
| Wago | 750-831 Firmware | <= 10 |
| Wago | 750-831 | - |
| Wago | 750-889 Firmware | <= 10 |
| Wago | 750-889 | - |
| Wago | 750-829 Firmware | <= 10 |
| Wago | 750-829 | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/103726Third Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01Third Party AdvisoryUS Government Resource
- https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdfVendor Advisory
- http://www.securityfocus.com/bid/103726Third Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01Third Party AdvisoryUS Government Resource
- https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdfVendor Advisory
FAQ
What is CVE-2018-8836?
CVE-2018-8836 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Wago 750 Series PLCs with firmware version 10 and prior include a remote attack may take advantage of an improper implementation of the 3 way handshake during a TCP connection affecting the communicat...
How severe is CVE-2018-8836?
CVE-2018-8836 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-8836?
Check the references section above for vendor advisories and patch information. Affected products include: Wago 750-880 Firmware, Wago 750-880, Wago 750-881 Firmware, Wago 750-881, Wago 750-852 Firmware.