CVE-2023-21014
📋 TL;DR
This CVE describes an out-of-bounds read vulnerability in Android's p2p_iface.cpp that could allow local information disclosure. Attackers with system execution privileges could potentially read sensitive data from adjacent memory locations without user interaction. Only Android 13 devices are affected.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An attacker with system privileges could read sensitive information from adjacent memory, potentially exposing cryptographic keys, authentication tokens, or other protected data.
Likely Case
Limited information disclosure of non-critical data from adjacent memory buffers, potentially exposing some system information but not full system compromise.
If Mitigated
With proper privilege separation and memory protection mechanisms, impact would be limited to reading non-sensitive data from controlled memory regions.
🎯 Exploit Status
Exploitation requires system execution privileges and knowledge of memory layout. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Bulletin March 2023
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2023-03-01
Restart Required: Yes
Instructions:
1. Check for Android system updates in Settings > System > System update. 2. Install the March 2023 security patch. 3. Reboot the device after installation completes.
🔧 Temporary Workarounds
Restrict system privileges
androidLimit applications and users with system execution privileges to reduce attack surface
🧯 If You Can't Patch
- Implement strict application sandboxing to limit what processes can access system-level resources
- Monitor for suspicious memory access patterns and privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check Android version in Settings > About phone > Android version. If it shows Android 13 without March 2023 security patch, device is vulnerable.Check Version:
adb shell getprop ro.build.version.release && adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android version is Android 13 with March 2023 security patch installed. Check Settings > About phone > Android security patch level shows March 5, 2023 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual memory access patterns in system logs
- Processes attempting to read beyond allocated memory bounds
Network Indicators:
- No network indicators - this is a local vulnerability
SIEM Query:
No specific SIEM query as this is a local memory corruption issue