CVE-2024-54119
📋 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 application boundaries. It affects Huawei devices running vulnerable software versions. Successful exploitation could compromise service confidentiality by exposing sensitive visual information.
💻 Affected Systems
- Huawei devices with UIExtension module
📦 What is this software?
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Attackers could capture sensitive screen content from other applications, potentially exposing passwords, personal data, or confidential information displayed on screen.
Likely Case
Unauthorized applications could read screen content from other running applications, violating application sandboxing and privacy expectations.
If Mitigated
With proper application sandboxing and permission controls, exploitation would be limited to authorized applications only.
🎯 Exploit Status
Exploitation requires developing or installing a malicious application on the target device. No public exploit code is mentioned in the provided information.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletin for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2024/12/
Restart Required: Yes
Instructions:
1. Visit Huawei security advisory. 2. Identify if your device/model is affected. 3. Apply the latest security update via Settings > System & updates > Software update. 4. Restart device after update completes.
🔧 Temporary Workarounds
Restrict application installations
allOnly install applications from trusted sources like official app stores
Review application permissions
allRegularly audit and remove unnecessary screen-related permissions from applications
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement application allowlisting to prevent installation of untrusted applications
🔍 How to Verify
Check if Vulnerable:
Check device software version against Huawei's security advisory. Vulnerable if running affected version with UIExtension module.Check Version:
Settings > About phone > Software information (exact path may vary by device)Verify Fix Applied:
Verify software version has been updated to patched version listed in Huawei advisory. Check that security patch level is December 2024 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual screen capture or accessibility service activity logs
- Applications requesting screen-related permissions unexpectedly
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Application logs showing screen capture or overlay permissions being granted to untrusted applications