CVE-2022-48291
📋 TL;DR
This CVE describes an authentication bypass vulnerability in the Bluetooth pairing process of Huawei devices. Attackers within Bluetooth range can potentially pair with vulnerable devices without proper authentication, compromising confidentiality. Affected systems include Huawei smartphones and tablets running HarmonyOS.
💻 Affected Systems
- Huawei smartphones
- Huawei tablets
📦 What is this software?
Emui by Huawei
Emui by Huawei
Emui by Huawei
Emui by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized devices could pair with vulnerable systems, intercepting Bluetooth communications, accessing sensitive data, or potentially executing further attacks.
Likely Case
Attackers within physical proximity could pair with devices to eavesdrop on Bluetooth traffic or access limited device functions.
If Mitigated
With proper patching and Bluetooth security controls, the risk is reduced to minimal as the vulnerability requires physical proximity and specific conditions.
🎯 Exploit Status
Exploitation requires physical proximity to vulnerable device and knowledge of Bluetooth attack techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HarmonyOS security updates from March 2023
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2023/3/
Restart Required: Yes
Instructions:
1. Check for available updates in device Settings > System & updates > Software update. 2. Install the latest security update. 3. Restart device after installation.
🔧 Temporary Workarounds
Disable Bluetooth when not in use
allTurn off Bluetooth to prevent pairing attempts entirely
Settings > Bluetooth > Toggle off
Disable device discoverability
allSet Bluetooth to non-discoverable mode to prevent unauthorized pairing attempts
Settings > Bluetooth > Device name > Turn off visibility
🧯 If You Can't Patch
- Disable Bluetooth completely on affected devices
- Implement physical security controls to limit Bluetooth range exposure
🔍 How to Verify
Check if Vulnerable:
Check HarmonyOS version in Settings > About phone > HarmonyOS version. If version predates March 2023 security updates, device is likely vulnerable.Check Version:
Settings > About phone > HarmonyOS versionVerify Fix Applied:
Verify HarmonyOS version includes March 2023 security updates in Settings > About phone > HarmonyOS version.📡 Detection & Monitoring
Log Indicators:
- Unexpected Bluetooth pairing events
- Multiple failed pairing attempts from unknown devices
Network Indicators:
- Unusual Bluetooth traffic patterns
- Pairing requests from unauthorized MAC addresses
SIEM Query:
bluetooth AND (pairing OR authentication) AND (failed OR unexpected)🔗 References
- https://consumer.huawei.com/en/support/bulletin/2023/3/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202303-0000001529824505
- https://consumer.huawei.com/en/support/bulletin/2023/3/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202303-0000001529824505
