CVE-2022-48621
📋 TL;DR
This CVE describes a missing authentication vulnerability in Huawei/HarmonyOS Wi-Fi modules that allows attackers to access critical functions without proper credentials. Successful exploitation could compromise service confidentiality by allowing unauthorized access to sensitive Wi-Fi functionality. This affects Huawei consumer devices running vulnerable HarmonyOS versions.
💻 Affected Systems
- Huawei consumer devices with Wi-Fi capability
- HarmonyOS devices
📦 What is this software?
Emui by Huawei
Emui by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Attackers could intercept network traffic, perform man-in-the-middle attacks, access device management functions, and potentially compromise device integrity through the Wi-Fi interface.
Likely Case
Unauthorized access to Wi-Fi configuration and management functions, potentially allowing attackers to monitor network traffic or modify Wi-Fi settings.
If Mitigated
With proper network segmentation and access controls, impact would be limited to the local network segment where the vulnerable device resides.
🎯 Exploit Status
The vulnerability description indicates missing authentication, suggesting attackers can access critical functions without credentials. Exploitation likely requires network access to the device.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: February 2024 security updates and later
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2024/2/
Restart Required: Yes
Instructions:
1. Check for available updates in device settings. 2. Apply the February 2024 or later security update. 3. Restart the device after installation. 4. Verify the update was successful.
🔧 Temporary Workarounds
Disable Wi-Fi when not in use
allTurn off Wi-Fi functionality to prevent exploitation through this vector
Network segmentation
allIsolate vulnerable devices on separate network segments with strict access controls
🧯 If You Can't Patch
- Implement strict network access controls to limit which devices can communicate with vulnerable systems
- Monitor network traffic for unusual Wi-Fi management activity and implement intrusion detection
🔍 How to Verify
Check if Vulnerable:
Check device security patch level in settings - if before February 2024, likely vulnerableCheck Version:
Check device settings > About phone/device > Security patch levelVerify Fix Applied:
Verify security patch level shows February 2024 or later in device settings📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to Wi-Fi management interfaces
- Unexpected Wi-Fi configuration changes
- Authentication failures for Wi-Fi functions
Network Indicators:
- Unusual Wi-Fi management traffic from unexpected sources
- Wi-Fi configuration requests without proper authentication
SIEM Query:
source="device_logs" AND (event_type="wifi_auth_failure" OR event_type="wifi_config_change")🔗 References
- https://consumer.huawei.com/en/support/bulletin/2024/2/
- https://device.harmonyos.com/cn/docs/security/update/security-bulletins-202402-0000001834855405
- https://consumer.huawei.com/en/support/bulletin/2024/2/
- https://device.harmonyos.com/cn/docs/security/update/security-bulletins-202402-0000001834855405
