CVE-2024-49747
📋 TL;DR
This critical vulnerability in Android's Bluetooth GATT server allows remote attackers to execute arbitrary code without user interaction or elevated privileges. It affects Android devices with vulnerable Bluetooth implementations, potentially compromising device security and data integrity.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with remote code execution leading to data theft, surveillance, ransomware deployment, or persistent backdoor installation.
Likely Case
Remote code execution allowing attacker to gain control of affected device, access sensitive data, and potentially pivot to other network resources.
If Mitigated
Limited impact if Bluetooth is disabled or device is isolated from untrusted networks, though risk remains if Bluetooth is enabled.
🎯 Exploit Status
Exploitation requires proximity (Bluetooth range) but no authentication or user interaction. Attack complexity is medium due to Bluetooth protocol manipulation requirements.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: January 2025 Android Security Patch or later
Vendor Advisory: https://source.android.com/security/bulletin/2025-01-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install January 2025 Android Security Patch. 3. Reboot device after installation. 4. Verify patch installation in Settings > About phone > Android security patch level.
🔧 Temporary Workarounds
Disable Bluetooth
androidTurn off Bluetooth to prevent exploitation via this vector
Settings > Connected devices > Connection preferences > Bluetooth > Toggle off
Restrict Bluetooth Visibility
androidSet Bluetooth to non-discoverable mode to reduce attack surface
Settings > Connected devices > Connection preferences > Bluetooth > Device name > Turn off 'Make device discoverable'
🧯 If You Can't Patch
- Disable Bluetooth completely when not in use
- Implement network segmentation to isolate vulnerable devices from critical resources
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android security patch level. If earlier than January 2025, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows January 2025 or later in Settings > About phone > Android security patch level.📡 Detection & Monitoring
Log Indicators:
- Unusual Bluetooth connection attempts
- GATT server error logs
- Process crashes in Bluetooth stack
Network Indicators:
- Suspicious Bluetooth traffic patterns
- Multiple failed GATT read requests
- Unusual Bluetooth device connections
SIEM Query:
source="android_logs" AND (process="bluetooth" OR process="com.android.bluetooth") AND (message="*GATT*" OR message="*read_by_type*") AND severity=ERROR