CVE-2023-52537
📋 TL;DR
This vulnerability allows attackers to bypass package name verification in the HwIms module on Huawei devices running HarmonyOS. Successful exploitation can affect system availability, potentially causing service disruption or crashes. It primarily impacts Huawei smartphone and tablet users with vulnerable HarmonyOS versions.
💻 Affected Systems
- Huawei smartphones
- Huawei tablets
📦 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
Complete system unavailability or crash, rendering the device unusable until reboot or recovery.
Likely Case
Service disruption in the IMS module affecting telephony or messaging functionality.
If Mitigated
Minimal impact with proper security controls and updated software.
🎯 Exploit Status
Exploitation likely requires local access or malicious app installation. No public exploit code identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HarmonyOS security updates from March 2024
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2024/3/
Restart Required: Yes
Instructions:
1. Check for system updates in device Settings > System & updates > Software update. 2. Download and install available security updates. 3. Restart device when prompted.
🔧 Temporary Workarounds
Restrict app installations
allOnly install apps from trusted sources like Huawei AppGallery
Disable unknown sources
allPrevent installation of apps from unknown sources
🧯 If You Can't Patch
- Monitor device for unusual behavior or crashes
- Limit device access to trusted users only
🔍 How to Verify
Check if Vulnerable:
Check HarmonyOS version in Settings > About phone > HarmonyOS version. Compare with patched versions in Huawei security bulletins.Check Version:
Not applicable - check via device Settings interfaceVerify Fix Applied:
Verify HarmonyOS version is updated to March 2024 security patch or later.📡 Detection & Monitoring
Log Indicators:
- Unexpected HwIms module crashes
- Package verification failures in system logs
Network Indicators:
- None - local vulnerability
SIEM Query:
Not applicable for typical mobile device environments🔗 References
- https://consumer.huawei.com/en/support/bulletin/2024/3/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202403-0000001667644725
- https://consumer.huawei.com/en/support/bulletin/2024/3/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202403-0000001667644725
