CVE-2023-52545
📋 TL;DR
This vulnerability in Huawei's Calendar app involves undefined permissions that could allow attackers to disrupt the app's functionality, affecting availability. It impacts Huawei devices running HarmonyOS with the vulnerable Calendar app version. Successful exploitation could cause the Calendar app to crash or become unresponsive.
💻 Affected Systems
- Huawei Calendar app
📦 What is this software?
Emui by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Complete denial of service for the Calendar app, preventing users from accessing or managing calendar events, potentially affecting scheduling and productivity.
Likely Case
Temporary disruption of Calendar app functionality, requiring app restart or device reboot to restore normal operation.
If Mitigated
Minimal impact with proper patching; Calendar app continues to function normally with all features available.
🎯 Exploit Status
Exploitation likely requires local access or malicious app installation; no public exploit details available in provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: March 2024 security updates
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2024/3/
Restart Required: Yes
Instructions:
1. Check for system updates in device Settings. 2. Install March 2024 security update. 3. Restart device after installation. 4. Verify Calendar app version is updated.
🔧 Temporary Workarounds
Disable Calendar app
allTemporarily disable the Calendar app to prevent exploitation while awaiting patch
Restrict app permissions
allReview and restrict unnecessary permissions for Calendar app in device settings
🧯 If You Can't Patch
- Isolate affected devices from critical networks
- Implement application whitelisting to prevent unauthorized app installations
🔍 How to Verify
Check if Vulnerable:
Check if device has March 2024 security update installed; if not, likely vulnerableCheck Version:
Settings > System & updates > Software update to check security patch levelVerify Fix Applied:
Verify March 2024 security update is installed and Calendar app functions normally without crashes📡 Detection & Monitoring
Log Indicators:
- Frequent Calendar app crashes
- Permission denial errors in system logs
- Unexpected Calendar app termination
Network Indicators:
- No specific network indicators as this is a local app vulnerability
SIEM Query:
Search for Calendar app crash events or permission errors in device/system logs🔗 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
