Vulnerability identifier: #VU23639
Vulnerability risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID:
CWE-ID:
CWE-306
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Wago PFC200 Controller
Hardware solutions /
Firmware
WAGO PFC100 Controller
Hardware solutions /
Firmware
Vendor: WAGO
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an insufficient authentication mechanism in the iocheckd service "I/O-Check" functionality. A remote attacker can send a specially crafted set of packets which will overwrite the MAC Address stored persistently on the device, cause a denial of service, resulting in the device entering an error state where it ceases all network communications.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versions
Wago PFC200 Controller: 03.00.39(12) - 03.01.07(13)
WAGO PFC100 Controller: 03.00.39(12)
External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0869
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.