CVE-2023-44099
📋 TL;DR
This CVE describes a data verification error vulnerability in a kernel module that affects WLAN functionality. Successful exploitation could cause WLAN service interruption, potentially leading to denial of service. The vulnerability affects Huawei devices running HarmonyOS.
💻 Affected Systems
- Huawei devices with HarmonyOS
📦 What is this software?
Emui by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Complete WLAN service disruption leading to denial of service for wireless connectivity on affected devices
Likely Case
Temporary WLAN interruption requiring device reboot to restore connectivity
If Mitigated
No impact if patched or if workarounds are implemented
🎯 Exploit Status
Exploitation requires kernel-level access or ability to trigger the data verification error; no public exploit details available
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: December 2023 security updates
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2023/12/
Restart Required: Yes
Instructions:
1. Check for available updates in device settings. 2. Apply December 2023 security patch from Huawei. 3. Reboot device after installation.
🔧 Temporary Workarounds
Disable WLAN if not needed
linuxTemporarily disable wireless functionality to prevent exploitation
settings put global wifi_on 0
ip link set wlan0 down
🧯 If You Can't Patch
- Restrict physical access to devices to prevent local exploitation
- Implement network segmentation to limit impact of WLAN disruption
🔍 How to Verify
Check if Vulnerable:
Check device security patch level in settings; if before December 2023, likely vulnerableCheck Version:
getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows December 2023 or later in device settings📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs related to WLAN module
- Unexpected WLAN service restarts
- Network connectivity loss events
Network Indicators:
- Sudden loss of wireless connectivity from affected devices
- Increased WLAN association failures
SIEM Query:
source="kernel" AND "WLAN" AND ("panic" OR "error" OR "verification")🔗 References
- https://consumer.huawei.com/en/support/bulletin/2023/12/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202312-0000001758430245
- https://consumer.huawei.com/en/support/bulletin/2023/12/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202312-0000001758430245
