CVE-2023-42747
📋 TL;DR
This CVE describes a missing permission check vulnerability in camera service that allows local privilege escalation. Attackers can exploit this to gain elevated privileges without needing additional execution permissions. This affects devices using the vulnerable camera service implementation.
💻 Affected Systems
- Unisoc camera service implementation
📦 What is this software?
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where an attacker gains root/system-level access, potentially installing persistent malware, accessing all user data, and controlling device functions.
Likely Case
Local attacker gains elevated privileges to access sensitive camera data, other app data, or system resources they shouldn't have access to.
If Mitigated
Limited impact with proper permission controls and isolation mechanisms preventing privilege escalation.
🎯 Exploit Status
Exploitation requires local access but no additional privileges. The missing permission check suggests straightforward exploitation once the vulnerability is understood.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.unisoc.com/en_us/secy/announcementDetail/1731138365803266049
Restart Required: Yes
Instructions:
1. Check with device manufacturer for security updates. 2. Apply available firmware/OS updates. 3. Reboot device after update installation.
🔧 Temporary Workarounds
Restrict camera permissions
androidLimit camera access to essential apps only to reduce attack surface
Disable unnecessary camera features
androidTurn off camera services or features not in use
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement strict app installation policies and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check device manufacturer security bulletins for affected models and firmware versionsCheck Version:
Settings > About Phone > Software Information (Android)Verify Fix Applied:
Verify firmware version is updated beyond vulnerable versions and check security patch level📡 Detection & Monitoring
Log Indicators:
- Unexpected camera service access attempts
- Permission escalation attempts in system logs
- Abnormal privilege changes
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Not applicable for local privilege escalation without network component