CVE-2023-48418
📋 TL;DR
This vulnerability allows local privilege escalation on affected Android devices by enabling adb (Android Debug Bridge) access before Setup Wizard completion due to an insecure default value. Attackers can gain elevated privileges without user interaction or additional execution privileges. Primarily affects Android devices, particularly Pixel Watch models.
💻 Affected Systems
- Android
- Google Pixel Watch
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attacker to install malware, access sensitive data, modify system settings, and maintain persistence.
Likely Case
Local attacker gains elevated privileges to access restricted data, install unauthorized apps, or modify device configuration.
If Mitigated
Limited impact with proper device security controls, but still represents a significant local privilege escalation risk.
🎯 Exploit Status
Exploit requires local access to device but no user interaction. Public exploit details available on Packet Storm.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: December 2023 Android security patch
Vendor Advisory: https://source.android.com/docs/security/bulletin/pixel-watch/2023/2023-12-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install December 2023 Android security patch. 3. Reboot device after installation.
🔧 Temporary Workarounds
Disable Developer Options
androidPrevent adb access by disabling developer options
Settings > System > Developer options > Toggle off
Complete Setup Wizard Immediately
androidEnsure device setup is fully completed to move past vulnerable state
🧯 If You Can't Patch
- Restrict physical access to devices
- Implement device management policies to monitor for unauthorized adb connections
🔍 How to Verify
Check if Vulnerable:
Check if device is running Android version prior to December 2023 security patch and if adb can be accessed during setup wizardCheck Version:
Settings > About phone > Android version > Security patch levelVerify Fix Applied:
Verify device has December 2023 security patch installed and adb cannot be accessed before setup completion📡 Detection & Monitoring
Log Indicators:
- Unauthorized adb connections during device setup
- adb enable events before setup completion
Network Indicators:
- Unexpected adb network connections from devices
SIEM Query:
source="android_logs" AND (message="*adb*" OR message="*debugging*") AND timestamp > device_setup_start_time🔗 References
- http://packetstormsecurity.com/files/176446/Android-DeviceVersionFragment.java-Privilege-Escalation.html
- https://source.android.com/docs/security/bulletin/pixel-watch/2023/2023-12-01
- http://packetstormsecurity.com/files/176446/Android-DeviceVersionFragment.java-Privilege-Escalation.html
- https://source.android.com/docs/security/bulletin/pixel-watch/2023/2023-12-01
