CVE-2024-31315
📋 TL;DR
This vulnerability allows a malicious app to hide itself from the Device & app notifications settings by exploiting improper input validation in Android's ManagedServices.java. This could lead to local privilege escalation without requiring additional execution privileges. Affected users are those running vulnerable Android versions who install malicious apps requiring user interaction for exploitation.
💻 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
An attacker gains persistent notification access to hide malicious activity, potentially enabling further privilege escalation or data exfiltration while remaining undetected in system settings.
Likely Case
Malicious apps hide notification access permissions from users, preventing them from revoking permissions and allowing continued background data collection or unwanted notifications.
If Mitigated
With proper app vetting and user awareness, the impact is limited as exploitation requires user interaction to install malicious apps.
🎯 Exploit Status
Exploitation requires user interaction to install malicious app and grant notification permissions; no public exploit code identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Patch Level June 2024 or later
Vendor Advisory: https://source.android.com/security/bulletin/2024-06-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install the June 2024 Android security patch or later. 3. Restart device after installation.
🔧 Temporary Workarounds
Disable notification access for untrusted apps
androidManually review and disable notification access for apps that don't require it for functionality.
Settings > Apps & notifications > Special app access > Notification access
Install apps only from trusted sources
androidLimit app installations to Google Play Store or other verified app stores with security scanning.
Settings > Security > Install unknown apps (disable for all apps)
🧯 If You Can't Patch
- Regularly audit notification access permissions in device settings and revoke access for suspicious apps.
- Implement mobile device management (MDM) policies to restrict app installations to approved sources only.
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version > Security patch level. If date is before June 2024, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows June 2024 or later after applying update.📡 Detection & Monitoring
Log Indicators:
- Unusual notification access permission changes in system logs
- Apps requesting notification access without clear user benefit
Network Indicators:
- None - this is a local privilege escalation vulnerability
SIEM Query:
Not applicable for typical SIEM monitoring as this is a local device vulnerability🔗 References
- https://android.googlesource.com/platform/frameworks/base/+/a9ee2793068235ff423d08cc0964870c054d1983
- https://source.android.com/security/bulletin/2024-06-01
- https://android.googlesource.com/platform/frameworks/base/+/a9ee2793068235ff423d08cc0964870c054d1983
- https://source.android.com/security/bulletin/2024-06-01
