CVE-2024-40662
📋 TL;DR
This vulnerability in Android's Uri.java allows attackers to craft malformed Uri objects due to improper input validation, potentially leading to local privilege escalation without user interaction. It affects Android devices running vulnerable versions, allowing attackers to gain elevated privileges on compromised devices.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise with attacker gaining system-level privileges, potentially installing persistent malware, accessing sensitive data, or bypassing security controls.
Likely Case
Local privilege escalation allowing attackers to bypass application sandboxing, access other apps' data, or perform unauthorized system operations.
If Mitigated
Limited impact if devices are patched or have additional security controls like verified boot, SELinux enforcement, and app sandboxing properly configured.
🎯 Exploit Status
Exploitation requires local access but no user interaction; complexity is medium due to need for specific Uri crafting.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: September 2024 Android Security Patch or later
Vendor Advisory: https://source.android.com/security/bulletin/2024-09-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install September 2024 or later Android security patch. 3. Reboot device after installation.
🔧 Temporary Workarounds
Restrict app installations
androidOnly install apps from trusted sources like Google Play Store to reduce attack surface
Enable Google Play Protect
androidEnsure Google Play Protect is enabled for additional security scanning
🧯 If You Can't Patch
- Isolate vulnerable devices from sensitive networks and data
- Implement application allowlisting to restrict which apps can run
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version > Security patch levelCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows September 2024 or later date📡 Detection & Monitoring
Log Indicators:
- Unusual privilege escalation attempts in system logs
- Suspicious Uri parsing errors or crashes
Network Indicators:
- Unusual outbound connections from system processes
SIEM Query:
source="android_system" AND (event_type="privilege_escalation" OR error="Uri parsing")