CVE-2024-34738
📋 TL;DR
This vulnerability allows unprivileged Android apps to read their own restricted app-op states due to a logic error in AppOpsService.java. This could lead to local privilege escalation without requiring user interaction. Affects Android devices running vulnerable versions.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An unprivileged app could escalate privileges to gain unauthorized access to restricted system operations or data, potentially compromising device security.
Likely Case
Malicious apps could bypass intended restrictions to access sensitive operations they shouldn't have permission for.
If Mitigated
With proper app sandboxing and security updates, impact is limited to apps already installed on the device.
🎯 Exploit Status
Exploitation requires a malicious app to be installed on the device; no user interaction needed once installed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: August 2024 Android Security Patch
Vendor Advisory: https://source.android.com/security/bulletin/2024-08-01
Restart Required: Yes
Instructions:
1. Check for Android system updates in Settings > System > System update. 2. Install the August 2024 security patch. 3. Reboot device after installation.
🔧 Temporary Workarounds
Restrict app installations
androidOnly install apps from trusted sources like Google Play Store and disable unknown sources installation.
Settings > Security > Install unknown apps > Disable for all apps
🧯 If You Can't Patch
- Implement mobile device management (MDM) to control app installations
- Regularly audit installed apps and remove suspicious or unnecessary applications
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version > Security patch level. If before August 2024, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows 'August 5, 2024' or later in Settings > About phone.📡 Detection & Monitoring
Log Indicators:
- Unusual app permission requests
- AppOpsService access violations in system logs
Network Indicators:
- None - this is a local exploit
SIEM Query:
source="android_system" AND (event="appops_violation" OR event="permission_override")