CVE-2022-30274
📋 TL;DR
CVE-2022-30274 is a critical vulnerability in Motorola ACE1000 RTU devices where credentials and authentication data are encrypted using the Tiny Encryption Algorithm (TEA) in ECB mode with a hardcoded key. This allows attackers to decrypt sensitive information and potentially gain unauthorized access to industrial control systems. Organizations using Motorola ACE1000 RTU devices through May 2022 are affected.
💻 Affected Systems
- Motorola ACE1000 RTU
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of industrial control systems, unauthorized access to critical infrastructure, manipulation of RTU operations, and potential physical damage to industrial processes.
Likely Case
Unauthorized access to the XRT LAN-to-radio gateway and XNL networks, credential theft, and potential disruption of industrial operations.
If Mitigated
Limited impact if devices are isolated behind firewalls with strict network segmentation and access controls.
🎯 Exploit Status
Exploitation requires network access to the affected devices but does not require authentication. The hardcoded key and ECB mode make decryption straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 2022-05-02
Vendor Advisory: https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-06
Restart Required: Yes
Instructions:
1. Contact Motorola Solutions for updated firmware. 2. Backup current configuration. 3. Apply firmware update following vendor instructions. 4. Restart device. 5. Verify encryption is no longer using TEA in ECB mode with hardcoded keys.
🔧 Temporary Workarounds
Network Segmentation
allIsolate ACE1000 RTU devices in separate network segments with strict firewall rules.
Access Control Lists
allImplement strict ACLs to limit network access to only authorized IP addresses and services.
🧯 If You Can't Patch
- Implement network monitoring and intrusion detection for suspicious traffic to/from ACE1000 devices.
- Disable unnecessary services and ports, particularly those related to XRT gateway and XNL authentication.
🔍 How to Verify
Check if Vulnerable:
Check device firmware version - if it's dated 2022-05-02 or earlier, it's vulnerable. Review configuration for TEA/ECB encryption usage.Check Version:
Consult Motorola documentation for version checking commands specific to ACE1000 RTU.Verify Fix Applied:
Verify firmware version is after 2022-05-02 and confirm encryption methods have been updated away from TEA/ECB with hardcoded keys.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts, unusual access patterns to XRT gateway or XNL ports
Network Indicators:
- Unusual traffic to/from ACE1000 devices on XRT or XNL ports, decryption attempts using known TEA patterns
SIEM Query:
source_ip:ACE1000_IP AND (port:XRT_PORT OR port:XNL_PORT) AND (event_type:auth_failure OR event_type:unusual_traffic)