CVE-2024-22004
📋 TL;DR
This vulnerability allows attackers with privileged access on Linux non-secure operating systems to bypass memory length checks and leak sensitive data from Trusted Applications' secure memory. It affects systems using Trusted Execution Environments (TEE) where secure and non-secure worlds interact. The vulnerability requires local privileged access but can lead to significant information disclosure.
💻 Affected Systems
- Google Android devices with Trusted Execution Environment (TEE)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of secure memory contents including cryptographic keys, authentication credentials, and other sensitive data protected by Trusted Applications, potentially leading to system-wide security bypass.
Likely Case
Targeted information disclosure where attackers with local privileged access extract specific sensitive data from secure memory for credential theft or privilege escalation.
If Mitigated
Limited impact if proper access controls restrict privileged users and secure memory isolation is maintained through additional security layers.
🎯 Exploit Status
Exploitation requires privileged access on the non-secure OS and understanding of TEE memory management. No public exploit code has been observed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security patch level 2024-02-01 or later
Vendor Advisory: https://support.google.com/product-documentation/answer/14580222
Restart Required: Yes
Instructions:
1. Check current Android security patch level in Settings > About phone > Android version. 2. Apply the February 2024 security patch via OTA update or manual installation. 3. Reboot device after patch installation. 4. Verify patch is applied by checking security patch level again.
🔧 Temporary Workarounds
Restrict privileged access
linuxLimit root/admin access to only essential personnel and implement strict access controls for privileged accounts.
Disable unnecessary Trusted Applications
androidRemove or disable Trusted Applications that are not essential for device operation to reduce attack surface.
🧯 If You Can't Patch
- Implement strict least-privilege access controls for all privileged accounts
- Monitor for unusual privileged access patterns and secure memory access attempts
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level: Settings > About phone > Android version. If patch level is earlier than 2024-02-01, the device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows 2024-02-01 or later in Settings > About phone > Android version.📡 Detection & Monitoring
Log Indicators:
- Unusual privileged process accessing TEE interfaces
- Multiple failed attempts to access secure memory regions
- Abnormal Trusted Application loading patterns
Network Indicators:
- No network indicators - this is a local memory access vulnerability
SIEM Query:
source="android_system_logs" AND (event_type="privileged_access" OR process_name CONTAINS "tee" OR message CONTAINS "secure_memory")