CVE-2024-42039
📋 TL;DR
This CVE describes an access control vulnerability in Huawei's SystemUI module that could allow unauthorized access to system services. Successful exploitation may compromise service confidentiality by allowing attackers to access protected system functions. This affects Huawei smartphone users with vulnerable SystemUI versions.
💻 Affected Systems
- Huawei smartphones with SystemUI module
📦 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
Attacker gains unauthorized access to sensitive system services, potentially accessing user data or system functions that should be restricted.
Likely Case
Limited information disclosure from system services, potentially exposing some device information or service metadata.
If Mitigated
Proper access controls prevent exploitation, maintaining normal service confidentiality.
🎯 Exploit Status
Exploitation likely requires local access or malicious app installation. CWE-285 indicates improper authorization issues.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletin for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2024/9/
Restart Required: Yes
Instructions:
1. Check for system updates in device Settings 2. Install latest security update from Huawei 3. Restart device after update completes
🔧 Temporary Workarounds
Restrict app permissions
allLimit app permissions to reduce attack surface
Disable unnecessary system services
allTurn off unused system services that might be vulnerable
🧯 If You Can't Patch
- Implement strict app installation policies to prevent malicious apps
- Use mobile device management (MDM) solutions to enforce security controls
🔍 How to Verify
Check if Vulnerable:
Check device security patch level in Settings > About phone > Build numberCheck Version:
Not applicable - check via device settings interfaceVerify Fix Applied:
Verify security patch date is after September 2024 in device settings📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to SystemUI services
- Permission violation logs in system logs
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Not applicable for typical mobile device deployments