CVE-2024-36499
📋 TL;DR
This vulnerability allows unauthorized screenshot capturing in Huawei's WMS module, potentially exposing sensitive information displayed on affected devices. It affects Huawei consumer devices running vulnerable software versions. The vulnerability impacts service confidentiality by allowing attackers to capture screen content without proper authorization.
💻 Affected Systems
- Huawei consumer devices with WMS 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
Attackers could capture screenshots containing sensitive information such as passwords, personal data, financial information, or confidential business data displayed on the device.
Likely Case
Unauthorized capture of screen content that may include personal information, app data, or other sensitive visual information displayed during normal device usage.
If Mitigated
With proper access controls and patching, the vulnerability can be prevented from being exploited, maintaining normal device functionality without data leakage.
🎯 Exploit Status
Exploitation requires specific conditions and access to the WMS module functionality. The CWE-269 (Improper Privilege Management) classification suggests privilege escalation or authorization bypass is involved.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions specified in Huawei's June 2024 security updates
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2024/6/
Restart Required: Yes
Instructions:
1. Check for available system updates in device settings. 2. Install the latest security update from Huawei. 3. Restart the device after installation completes. 4. Verify the update was successfully applied.
🔧 Temporary Workarounds
Disable unnecessary screen capture permissions
allReview and restrict screen capture permissions for apps that don't require this functionality
Implement application whitelisting
allOnly allow trusted applications to run on affected devices
🧯 If You Can't Patch
- Implement strict access controls to limit which applications can interact with screen capture functionality
- Monitor for unusual screen capture activities and implement alerting for unauthorized capture attempts
🔍 How to Verify
Check if Vulnerable:
Check device software version against Huawei's June 2024 security bulletin. Devices running versions listed as vulnerable in the bulletin are affected.Check Version:
Check device settings > About phone > Software information for current versionVerify Fix Applied:
Verify the device has installed the latest security update from Huawei's June 2024 bulletin and that the software version matches patched versions.📡 Detection & Monitoring
Log Indicators:
- Unusual screen capture events
- Unauthorized access attempts to WMS services
- Privilege escalation attempts related to screen capture
Network Indicators:
- Unexpected data exfiltration containing screen captures
- Unusual network traffic patterns following screen capture events
SIEM Query:
Search for events related to screen capture, WMS service access, or privilege escalation in system logs