CVE-2020-11223
📋 TL;DR
This vulnerability allows attackers to execute arbitrary code or cause denial of service by exploiting an out-of-bounds write in Qualcomm camera drivers. It affects devices using Snapdragon processors across automotive, compute, consumer IoT, industrial IoT, mobile, and wearable platforms.
💻 Affected Systems
- Snapdragon Auto
- Snapdragon Compute
- Snapdragon Consumer IOT
- Snapdragon Industrial IOT
- Snapdragon Mobile
- Snapdragon Wearables
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with kernel-level privileges leading to persistent backdoor installation, data theft, or complete device control.
Likely Case
Local privilege escalation allowing attackers to gain elevated permissions, potentially leading to data access or further system compromise.
If Mitigated
Limited impact with proper sandboxing and SELinux policies, potentially resulting only in application crashes.
🎯 Exploit Status
Exploitation requires local access or malicious app with camera permissions. No public exploit code available as of advisory publication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Varies by device manufacturer and chipset
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/february-2021-bulletin
Restart Required: Yes
Instructions:
1. Check with device manufacturer for security updates. 2. Apply latest firmware/OS updates. 3. Reboot device after update installation.
🔧 Temporary Workarounds
Camera Permission Restriction
androidRestrict camera access to trusted applications only
SELinux Enforcement
linuxEnsure SELinux is in enforcing mode to limit impact
getenforce
🧯 If You Can't Patch
- Isolate affected devices from critical networks
- Implement application allowlisting to prevent malicious app installation
🔍 How to Verify
Check if Vulnerable:
Check device chipset model and firmware version against manufacturer security bulletinsCheck Version:
adb shell getprop ro.build.fingerprint (Android) or cat /proc/version (Linux)Verify Fix Applied:
Verify security patch level includes February 2021 or later Qualcomm updates📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Camera service crashes
- Permission escalation attempts
Network Indicators:
- Unusual outbound connections from camera-related processes
SIEM Query:
Process:name=camera AND EventID=1000 OR EventID=41