CVE-2024-56444
📋 TL;DR
This CVE describes a cross-process screen stack vulnerability in Huawei's UIExtension module that could allow unauthorized access to screen content across processes. Successful exploitation could lead to information disclosure of sensitive data displayed on screen. This affects Huawei devices running vulnerable versions of their software.
💻 Affected Systems
- Huawei devices with UIExtension module
📦 What is this software?
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Attackers could capture sensitive information displayed on screen including passwords, personal data, or confidential business information from other processes.
Likely Case
Information leakage of non-critical screen content or application data visible in other processes.
If Mitigated
Limited impact with proper process isolation and security controls in place.
🎯 Exploit Status
Exploitation likely requires local access and knowledge of the UIExtension module internals.
🛠️ 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: No
Instructions:
1. Check Huawei security advisory for affected versions. 2. Apply the latest security update from Huawei. 3. Verify the update was successful.
🔧 Temporary Workarounds
Restrict app permissions
allLimit screen capture and accessibility permissions for untrusted applications
🧯 If You Can't Patch
- Isolate sensitive applications from potentially malicious apps
- Implement strict application whitelisting policies
🔍 How to Verify
Check if Vulnerable:
Check device software version against Huawei's security advisory for affected versionsCheck Version:
Check device settings > About phone > Software versionVerify Fix Applied:
Verify device is running a version later than those listed in Huawei's security advisory📡 Detection & Monitoring
Log Indicators:
- Unusual screen capture attempts
- Abnormal UIExtension module activity
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Not applicable for this local vulnerability