CVE-2024-56442
📋 TL;DR
This vulnerability involves improper implementation of native APIs in the NFC service module, allowing attackers to cause abnormal behavior in NFC features. It affects Huawei devices with vulnerable NFC implementations, potentially impacting users who rely on NFC functionality for payments, access control, or data transfer.
💻 Affected Systems
- Huawei smartphones and tablets with NFC capability
📦 What is this software?
Emui by Huawei
Emui by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Complete disruption of NFC functionality including payment systems, access control, and data transfer capabilities, potentially leading to denial of service for critical NFC-dependent operations.
Likely Case
Intermittent NFC failures, failed transactions, or degraded performance of NFC features without complete system compromise.
If Mitigated
Minor service disruptions that can be quickly restored by restarting NFC services or rebooting the device.
🎯 Exploit Status
Exploitation requires physical proximity to the target device and knowledge of NFC protocol manipulation. No authentication is required to trigger the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Huawei security bulletin for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/1/
Restart Required: Yes
Instructions:
1. Check for system updates in device settings. 2. Install the latest security update from Huawei. 3. Restart the device after installation. 4. Verify NFC functionality post-update.
🔧 Temporary Workarounds
Disable NFC
allTemporarily disable NFC functionality to prevent exploitation
Settings > Connected devices > Connection preferences > NFC > Toggle OFF
Restrict NFC Usage
allOnly enable NFC when actively needed for specific operations
🧯 If You Can't Patch
- Implement physical security controls to limit unauthorized NFC device proximity
- Monitor for abnormal NFC behavior and implement incident response procedures for NFC service disruptions
🔍 How to Verify
Check if Vulnerable:
Check device model and software version against Huawei's security bulletin. If NFC is enabled and device matches affected models/versions, it is vulnerable.Check Version:
Settings > About phone > Software information > Build number / Version numberVerify Fix Applied:
After applying update, test NFC functionality with known good NFC tags or devices. Verify no abnormal behavior occurs during NFC operations.📡 Detection & Monitoring
Log Indicators:
- NFC service crashes or restarts
- Abnormal NFC transaction failures
- Unexpected NFC tag read/write errors
Network Indicators:
- N/A - This is a local hardware/service vulnerability
SIEM Query:
Search for: 'NFC service' AND (crash OR error OR abnormal) in device/system logs