CVE-2024-0048
📋 TL;DR
This vulnerability in Android's AccountManagerService allows local attackers to retain foreground service privileges improperly, leading to privilege escalation without user interaction. It affects Android devices running vulnerable versions, potentially enabling malicious apps to gain elevated permissions.
💻 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 could gain persistent elevated privileges on the device, potentially accessing sensitive data, installing additional malware, or performing unauthorized actions with system-level permissions.
Likely Case
A malicious app could abuse this to maintain foreground service privileges after they should have been revoked, allowing it to run in the background with elevated permissions and potentially access restricted data.
If Mitigated
With proper app sandboxing and security updates, the impact is limited as the vulnerability requires local access and can be patched.
🎯 Exploit Status
Exploitation requires a malicious app to be installed on the device. No user interaction is needed once the app is installed, but initial installation requires user consent or another vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Update March 2024 or later
Vendor Advisory: https://source.android.com/security/bulletin/2024-03-01
Restart Required: Yes
Instructions:
1. Check for Android system updates in Settings > System > System update. 2. Install the March 2024 security update or later. 3. Restart the device after installation completes.
🔧 Temporary Workarounds
Disable unknown sources
androidPrevent installation of apps from unknown sources to reduce attack surface
Settings > Security > Install unknown apps > Disable for all apps
Review app permissions
androidRegularly review and restrict app permissions, especially for foreground services
Settings > Apps > [App Name] > Permissions
🧯 If You Can't Patch
- Isolate vulnerable devices from sensitive networks and data
- Implement strict app installation policies and only allow trusted apps from official stores
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version. If the date is before March 2024, the device is likely vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify the security patch level shows March 2024 or later after applying updates.📡 Detection & Monitoring
Log Indicators:
- Unusual AccountManagerService activity
- Foreground service privilege retention anomalies
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
Look for AccountManagerService errors or privilege escalation attempts in Android system logs🔗 References
- https://android.googlesource.com/platform/frameworks/base/+/2c236cde5505ee0e88cf1e3d073e2f1a53f0eede
- https://source.android.com/security/bulletin/2024-03-01
- https://android.googlesource.com/platform/frameworks/base/+/2c236cde5505ee0e88cf1e3d073e2f1a53f0eede
- https://source.android.com/security/bulletin/2024-03-01
