CVE-2022-30310 – This vulnerability allows unauthenticated attac... (How to Fix)

Q: What is the severity of CVE-2022-30310?

CVE-2022-30310 has a CVSS score of 9.8 (CRITICAL). This vulnerability allows unauthenticated attackers to execute arbitrary system commands with root privileges on Festo Controller CECC-X-M1 devices. Attackers can exploit an HTTP endpoint that doesn't properly validate port syntax in POST requests, leading to command injection. This affects all organizations using vulnerable versions of these industrial controllers.

📋 TL;DR

This vulnerability allows unauthenticated attackers to execute arbitrary system commands with root privileges on Festo Controller CECC-X-M1 devices. Attackers can exploit an HTTP endpoint that doesn't properly validate port syntax in POST requests, leading to command injection. This affects all organizations using vulnerable versions of these industrial controllers.

💻 Affected Systems

Products:

Festo Controller CECC-X-M1 product family

Versions: Multiple versions (specific versions not detailed in provided references)

Operating Systems: Embedded/Industrial OS on Festo controllers

Default Config Vulnerable: ⚠️ Yes

Notes: All default configurations appear vulnerable as the HTTP endpoint is accessible without authentication by default.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of industrial control systems, allowing attackers to execute arbitrary commands as root, potentially disrupting manufacturing processes, stealing sensitive data, or causing physical damage.

🟠

Likely Case

Unauthorized access to controller systems, installation of malware or backdoors, data exfiltration, and potential disruption of industrial operations.

🟢

If Mitigated

Limited impact if proper network segmentation, access controls, and monitoring are in place to prevent exploitation attempts.

🌐 Internet-Facing: HIGH - The vulnerable HTTP endpoint is accessible over network interfaces, making internet-exposed devices particularly vulnerable to remote exploitation.

🏢 Internal Only: HIGH - Even internally accessible devices are at significant risk due to the unauthenticated nature of the vulnerability and ease of exploitation.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

The vulnerability requires no authentication and involves simple command injection via HTTP POST requests, making exploitation straightforward for attackers with network access.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not specified in provided references

Vendor Advisory: https://cert.vde.com/en/advisories/VDE-2022-020/

Restart Required: Yes

Instructions:

1. Contact Festo support for specific patch information. 2. Apply vendor-provided firmware updates. 3. Restart affected controllers after patching. 4. Verify the fix by testing the vulnerable endpoint.

🔧 Temporary Workarounds

Network Segmentation

all

Isolate Festo controllers from untrusted networks using firewalls and VLANs

Access Control Lists

all

Restrict HTTP access to controller interfaces to authorized IP addresses only

🧯 If You Can't Patch

Implement strict network segmentation to isolate controllers from all untrusted networks
Deploy intrusion detection systems to monitor for exploitation attempts and block malicious traffic

🔍 How to Verify

Check if Vulnerable:

Test if the HTTP endpoint '/cecc-x-acknerr-request' accepts POST requests with command injection payloads in port parameters

Check Version:

Check controller firmware version through web interface or device management tools

Verify Fix Applied:

After patching, attempt to exploit the vulnerability and verify that command injection is no longer possible

📡 Detection & Monitoring

Log Indicators:

HTTP POST requests to '/cecc-x-acknerr-request' with unusual port parameters
System command execution from web service processes

Network Indicators:

HTTP traffic to controller ports containing command injection patterns
Unexpected outbound connections from controllers

SIEM Query:

source="festo_controller" AND (url="/cecc-x-acknerr-request" OR cmd="*injection*" OR port="*;*" OR port="*|*")

📊 Metadata

CVE ID: CVE-2022-30310

CVSS v3 Score: 9.8 (CRITICAL)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-78

Published: June 13, 2022

Last Updated: November 21, 2024

🔗 References

https://cert.vde.com/en/advisories/VDE-2022-020/ Vendor Advisory
https://cert.vde.com/en/advisories/VDE-2022-020/ Vendor Advisory

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