CVE-2023-48398
📋 TL;DR
This CVE describes an out-of-bounds read vulnerability in the baseband firmware of certain Android devices. Attackers could potentially read sensitive information from memory, but exploitation requires compromising the baseband firmware first. This primarily affects Google Pixel devices with specific baseband firmware versions.
💻 Affected Systems
- Google Pixel devices
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker could read sensitive information from device memory, potentially including authentication tokens, encryption keys, or other protected data, leading to complete device compromise.
Likely Case
Limited information disclosure from baseband memory, potentially revealing device identifiers or limited system information, but full exploitation requires significant technical capability.
If Mitigated
With proper security controls and updated firmware, the vulnerability is effectively neutralized with minimal to no impact.
🎯 Exploit Status
Exploitation requires baseband firmware compromise, which is technically challenging and typically requires physical access or specialized equipment.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security patch level December 2023 or later
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2023-12-01
Restart Required: Yes
Instructions:
1. Go to Settings > System > System update. 2. Check for and install available updates. 3. Restart device when prompted. 4. Verify security patch level is December 2023 or later.
🔧 Temporary Workarounds
Disable baseband debugging
androidPrevents unauthorized access to baseband debugging interfaces
adb shell setprop persist.vendor.radio.adb_log_on 0
adb reboot
🧯 If You Can't Patch
- Restrict physical access to devices to prevent baseband firmware compromise
- Implement network segmentation to isolate vulnerable devices from critical systems
🔍 How to Verify
Check if Vulnerable:
Check Settings > About phone > Android version > Android security patch level. If before December 2023, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows December 2023 or later in Settings > About phone.📡 Detection & Monitoring
Log Indicators:
- Unusual baseband processor activity
- Unexpected memory access patterns in baseband logs
Network Indicators:
- Anomalous baseband communication patterns
- Unexpected cellular network interactions
SIEM Query:
source="android_logs" AND (message="*baseband*" OR message="*ProtocolNetAcBarringInfo*") AND severity=ERROR