CVE-2020-11299
📋 TL;DR
A buffer overflow vulnerability in Qualcomm Snapdragon video processing allows attackers to execute arbitrary code by playing specially crafted video files. This affects numerous Snapdragon-powered devices across automotive, mobile, IoT, and wearable platforms. The high CVSS score indicates critical impact potential.
💻 Affected Systems
- Snapdragon Auto
- Snapdragon Compute
- Snapdragon Connectivity
- Snapdragon Consumer IOT
- Snapdragon Industrial IOT
- Snapdragon Mobile
- Snapdragon Voice & Music
- Snapdragon Wearables
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with full system compromise, allowing attackers to install malware, steal data, or create persistent backdoors on affected devices.
Likely Case
Application crashes, denial of service, or limited code execution depending on exploit sophistication and system protections.
If Mitigated
Application crash with no code execution if modern exploit mitigations like ASLR and DEP are properly implemented and effective.
🎯 Exploit Status
Exploitation requires user to play a malicious video file, which could be delivered via web, email, messaging apps, or other media sharing methods.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm March 2021 security bulletin for specific chipset firmware updates
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/march-2021-bulletin
Restart Required: Yes
Instructions:
1. Check device manufacturer for available firmware updates. 2. Apply Qualcomm-provided chipset firmware patches. 3. Update device operating system if patches are delivered through OS updates. 4. Reboot device after update completion.
🔧 Temporary Workarounds
Restrict video file sources
allLimit video playback to trusted sources only and disable automatic media playback in applications
Application sandboxing
allEnsure video playback applications run with minimal privileges and proper sandboxing
🧯 If You Can't Patch
- Network segmentation to isolate vulnerable devices from untrusted networks
- Implement application allowlisting to prevent unauthorized video player applications
🔍 How to Verify
Check if Vulnerable:
Check device chipset model and firmware version against Qualcomm's advisory. Use 'getprop ro.bootloader' or similar device-specific commands to identify chipset version.Check Version:
Device-specific: For Android devices, use 'getprop' commands or check Settings > About Phone > Build NumberVerify Fix Applied:
Verify firmware version has been updated to a version after March 2021 security patches. Check with device manufacturer for specific patch verification methods.📡 Detection & Monitoring
Log Indicators:
- Video player application crashes
- Kernel panic logs related to video processing
- Memory access violation errors in system logs
Network Indicators:
- Unusual network traffic following video file downloads
- Suspicious media file transfers to devices
SIEM Query:
source="*kernel*" AND ("video" OR "buffer overflow" OR "segmentation fault") AND process="*media*" OR "*video*"