CVE-2024-56448
📋 TL;DR
This vulnerability allows improper access control in the home screen widget module, potentially enabling attackers to disrupt device availability. It affects Huawei devices running vulnerable software versions. Users with affected devices are at risk of service disruption.
💻 Affected Systems
- Huawei smartphones and tablets
📦 What is this software?
Emui by Huawei
Emui by Huawei
Emui by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Complete denial of service on affected devices, rendering them unusable until reboot or factory reset.
Likely Case
Temporary disruption of home screen functionality and widget services, requiring user intervention to restore normal operation.
If Mitigated
Minimal impact with proper access controls and updated software preventing exploitation.
🎯 Exploit Status
Exploitation likely requires malicious app installation or local device access. No public exploit details available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletin for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/1/
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 after installation completes.
🔧 Temporary Workarounds
Disable unnecessary widgets
allRemove or disable home screen widgets that are not essential to reduce attack surface
Restrict app installations
allOnly install apps from trusted sources like official app stores
🧯 If You Can't Patch
- Implement mobile device management (MDM) policies to restrict widget usage
- Monitor for abnormal device behavior or crashes related to home screen functionality
🔍 How to Verify
Check if Vulnerable:
Check device software version in Settings > About phone > Software information and compare against Huawei's security bulletinCheck Version:
No CLI command; use device Settings > About phone > Software informationVerify Fix Applied:
Verify software version matches or exceeds patched version listed in Huawei advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected crashes in home screen or widget processes
- Access control violation logs in system logs
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
Device logs showing: 'home screen crash' OR 'widget service failure' OR 'access control violation' in system process