CVE-2023-21008
📋 TL;DR
This CVE describes an out-of-bounds read vulnerability in Android's p2p_iface.cpp that could allow local information disclosure. It affects Android 13 devices and requires System execution privileges to exploit. No user interaction is needed for successful exploitation.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An attacker with system privileges could read sensitive memory contents, potentially exposing cryptographic keys, authentication tokens, or other protected data.
Likely Case
Local information disclosure of adjacent memory contents, possibly revealing system information or application data.
If Mitigated
Minimal impact if proper privilege separation and memory protection mechanisms are in place.
🎯 Exploit Status
Exploitation requires system privileges and knowledge of memory layout. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security patch level March 2023 or later
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 apps with system privileges to only essential applications
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement application allowlisting to prevent unauthorized apps from gaining system privileges
🔍 How to Verify
Check if Vulnerable:
Check Android version in Settings > About phone > Android version. If it shows Android 13 and security patch level is before March 2023, the device is vulnerable.Check Version:
adb shell getprop ro.build.version.release && adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level in Settings > About phone > Android security update. Should show March 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