CVE-2024-29748
📋 TL;DR
CVE-2024-29748 is a logic error vulnerability in Android that allows local privilege escalation without requiring additional execution privileges. Attackers can exploit this to gain elevated system access on affected devices. This primarily affects Pixel devices and potentially other Android implementations.
💻 Affected Systems
- Google Pixel devices
- Android OS
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attacker to execute arbitrary code with system privileges, access sensitive data, and persist malware.
Likely Case
Local attacker gains elevated privileges to access protected system resources and user data they shouldn't normally access.
If Mitigated
Limited impact with proper patch management and security controls preventing unauthorized physical access to devices.
🎯 Exploit Status
Requires user interaction and local access. CISA has added to Known Exploited Vulnerabilities catalog indicating active exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: April 2024 Android security patch level (2024-04-01 or later)
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2024-04-01
Restart Required: Yes
Instructions:
1. Check for Android system updates in Settings > System > System update. 2. Install April 2024 security patch (2024-04-01 or later). 3. Reboot device after installation.
🔧 Temporary Workarounds
Restrict physical device access
allLimit who can physically access vulnerable devices to reduce attack surface
Enable verified boot
androidEnsure verified boot is enabled to detect system integrity issues
🧯 If You Can't Patch
- Isolate vulnerable devices from sensitive networks and data
- Implement strict access controls and monitor for unusual privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version. If patch level is earlier than 2024-04-01, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows 2024-04-01 or later in Settings > About phone > Android version.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- SELinux denials for system processes
- Unusual system service activity
Network Indicators:
- None - local exploitation only
SIEM Query:
Look for Android security events indicating privilege escalation or SELinux policy violations