CVE-2023-1692
📋 TL;DR
CVE-2023-1692 is an improper permission verification vulnerability in Huawei/HarmonyOS window management modules that allows unauthorized access to sensitive information. This affects Huawei devices running HarmonyOS where attackers could bypass permission checks to view restricted content. The vulnerability impacts confidentiality of data displayed in application windows.
💻 Affected Systems
- Huawei smartphones
- Huawei tablets
- HarmonyOS devices
📦 What is this software?
Emui by Huawei
Emui by Huawei
Emui by Huawei
Emui 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 access sensitive information from any application window, potentially exposing private data, authentication credentials, or confidential business information displayed on screen.
Likely Case
Unauthorized viewing of application content that should be restricted, potentially exposing personal information or application data to malicious actors.
If Mitigated
With proper access controls and patching, the vulnerability is eliminated, preventing unauthorized window content access.
🎯 Exploit Status
Exploitation requires local access or malicious application installation. No public exploit code has been disclosed as of knowledge cutoff.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HarmonyOS security updates released April 2023
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2023/4/
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
Restrict application permissions
allReview and restrict unnecessary application permissions, especially those related to screen/window access
Disable unknown sources
allPrevent installation of applications from unknown sources to reduce attack surface
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized applications from running
- Use mobile device management (MDM) solutions to enforce security policies and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check HarmonyOS version in Settings > About phone > HarmonyOS version. Compare against patched versions in Huawei security bulletins.Check Version:
Settings navigation: Settings > About phone > HarmonyOS versionVerify Fix Applied:
Verify security patch level in Settings > About phone > Build number. Ensure April 2023 or later security patches are installed.📡 Detection & Monitoring
Log Indicators:
- Unusual permission requests for window/screen access
- Multiple failed permission verification attempts
- Suspicious application behavior related to window management
Network Indicators:
- Unusual outbound connections from applications with window access permissions
SIEM Query:
Application logs showing abnormal window permission usage patterns or permission bypass attempts🔗 References
- https://consumer.huawei.com/en/support/bulletin/2023/4/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202304-0000001506528486
- https://consumer.huawei.com/en/support/bulletin/2023/4/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202304-0000001506528486
