CVE-2016-10477
📋 TL;DR
A buffer overflow vulnerability in Qualcomm Snapdragon mobile chipsets allows attackers to execute arbitrary code or cause denial of service while processing smart card requests. This affects Android devices with specific Qualcomm chipsets before the April 2018 security patch. The vulnerability is critical with a CVSS score of 9.8 due to its potential for remote code execution.
💻 Affected Systems
- Android devices with Qualcomm Snapdragon chipsets
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker gains full system control, executes arbitrary code with kernel privileges, and potentially installs persistent malware or exfiltrates sensitive data.
Likely Case
Local or network-adjacent attacker exploits the vulnerability to crash the device, cause denial of service, or execute limited code with elevated privileges.
If Mitigated
With proper network segmentation and updated devices, impact is limited to denial of service within isolated network segments.
🎯 Exploit Status
Buffer overflow in smart card processing requires specific conditions but could be triggered remotely in some configurations
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security patch level April 5, 2018 or later
Vendor Advisory: https://source.android.com/security/bulletin/2018-04-01
Restart Required: Yes
Instructions:
1. Check current Android security patch level in Settings > About phone > Android security patch level. 2. If before April 2018, apply the April 2018 security update. 3. Restart device after update installation.
🔧 Temporary Workarounds
Disable smart card functionality
androidIf smart card features are not required, disable them to reduce attack surface
Network segmentation
allIsolate affected devices from untrusted networks and limit network access
🧯 If You Can't Patch
- Replace affected devices with updated hardware or isolate them in a dedicated network segment
- Implement strict network access controls and monitor for unusual smart card processing activity
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android security patch level. If date is before April 5, 2018, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows April 5, 2018 or later after applying update📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Smart card service crashes
- Buffer overflow warnings in system logs
Network Indicators:
- Unusual smart card protocol traffic
- Unexpected network connections from affected devices
SIEM Query:
source="android_logs" AND ("kernel panic" OR "smartcard" OR "buffer overflow")