CVE-2023-52383
📋 TL;DR
A double-free vulnerability in the RSMC module of Huawei devices running HarmonyOS allows attackers to cause denial of service by freeing the same memory location twice. This affects availability of affected Huawei smartphones and tablets. The vulnerability requires local access to exploit.
💻 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
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash or device reboot, rendering the device temporarily unusable until restart.
Likely Case
Application crash or system instability affecting specific functions of the RSMC module.
If Mitigated
Minimal impact with proper access controls and isolation preventing local attackers from reaching vulnerable code.
🎯 Exploit Status
Requires local access and ability to trigger specific RSMC module operations. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: May 2024 security updates for HarmonyOS
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2024/5/
Restart Required: Yes
Instructions:
1. Check for system updates in device Settings. 2. Install the May 2024 security update. 3. Restart device after installation completes.
🔧 Temporary Workarounds
Restrict local application permissions
allLimit which applications have system-level access to reduce attack surface
🧯 If You Can't Patch
- Implement strict application vetting and installation controls
- Monitor for abnormal system crashes or RSMC module failures
🔍 How to Verify
Check if Vulnerable:
Check HarmonyOS version in Settings > About phone > HarmonyOS version. If before May 2024 security update, device is vulnerable.Check Version:
Settings > About phone > HarmonyOS versionVerify Fix Applied:
Verify HarmonyOS version shows May 2024 security update installed in Settings > About phone > HarmonyOS version.📡 Detection & Monitoring
Log Indicators:
- RSMC module crash logs
- System stability reports showing memory corruption
Network Indicators:
- No network indicators - local vulnerability only
SIEM Query:
Search for RSMC module crash events or memory corruption errors in system logs🔗 References
- https://consumer.huawei.com/en/support/bulletin/2024/5/
- https://device.harmonyos.com/cn/docs/security/update/security-bulletins-phones-202405-0000001902628049
- https://consumer.huawei.com/en/support/bulletin/2024/5/
- https://device.harmonyos.com/cn/docs/security/update/security-bulletins-phones-202405-0000001902628049
