CVE-2022-20004
📋 TL;DR
This vulnerability allows local attackers to access any slice URI on Android devices due to improper input validation in the SliceManagerService. It enables local privilege escalation without requiring user interaction or additional execution privileges. Affects Android 10 through 12L 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 allowing attacker to access sensitive app data, modify system settings, or install malicious apps with elevated privileges.
Likely Case
Unauthorized access to sensitive slice data from other apps, potentially exposing personal information or allowing manipulation of app functionality.
If Mitigated
Limited impact if device is patched or has strict app isolation policies enforced.
🎯 Exploit Status
Exploitation requires local access to the device. No user interaction needed once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Bulletin May 2022 patches
Vendor Advisory: https://source.android.com/security/bulletin/2022-05-01
Restart Required: Yes
Instructions:
1. Check for Android system updates in Settings > System > System update. 2. Install the May 2022 security patch or later. 3. Reboot device after installation.
🔧 Temporary Workarounds
Disable unnecessary slice providers
androidReduce attack surface by disabling slice providers for non-essential apps
Restrict app installations
androidOnly install apps from trusted sources like Google Play Store
🧯 If You Can't Patch
- Isolate vulnerable devices from sensitive networks and data
- Implement strict app control policies and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check Android version in Settings > About phone > Android version. If version is 10, 11, 12, or 12L without May 2022 patches, device is vulnerable.Check Version:
adb shell getprop ro.build.version.releaseVerify Fix Applied:
Verify Android Security Patch Level in Settings > About phone shows May 2022 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual slice access patterns in system logs
- Multiple failed slice permission checks followed by successful access
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Not applicable for typical enterprise SIEM as this is local device vulnerability