CVE-2023-21006
📋 TL;DR
This vulnerability allows local information disclosure on Android 13 devices through an out-of-bounds read in the p2p_iface.cpp component. Attackers with system execution privileges can exploit this without user interaction to read memory beyond intended boundaries. Only Android 13 devices with the vulnerable component 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 kernel or system memory, potentially exposing cryptographic keys, authentication tokens, or other protected data.
Likely Case
Local information disclosure of adjacent memory contents, possibly revealing system state information or limited sensitive data.
If Mitigated
With proper privilege separation and security controls, impact is limited to non-critical system information accessible at the same privilege level.
🎯 Exploit Status
Exploitation requires system execution privileges and knowledge of memory layout. No public exploit code has been disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Bulletin March 2023 patches
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 or later. 3. Reboot the device after installation.
🔧 Temporary Workarounds
Restrict system privileges
androidLimit applications with system execution privileges to reduce attack surface
🧯 If You Can't Patch
- Implement strict application vetting and privilege management to prevent malicious apps from obtaining system privileges
- Use Android's verified boot and security features to detect system-level tampering
🔍 How to Verify
Check if Vulnerable:
Check Android version in Settings > About phone > Android version. If it shows Android 13 without March 2023 security patches, the device is vulnerable.Check Version:
adb shell getprop ro.build.version.release && adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify the security patch level in Settings > About phone > Android version. It should show 'Security patch level: March 5, 2023' or later.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- System process crashes related to p2p_iface
- Memory access violation logs
Network Indicators:
- No network indicators - this is a local vulnerability
SIEM Query:
No specific SIEM query - monitor for system crashes or privilege escalation attempts