CVE-2020-11182
📋 TL;DR
This vulnerability allows remote code execution via heap overflow in Qualcomm Snapdragon chipsets when parsing NAL headers in video processing. It affects devices using vulnerable Snapdragon Auto, Compute, Connectivity, Consumer IoT, Industrial IoT, and Mobile platforms. Attackers can exploit this to execute arbitrary code with kernel privileges.
💻 Affected Systems
- Snapdragon Auto
- Snapdragon Compute
- Snapdragon Connectivity
- Snapdragon Consumer IOT
- Snapdragon Industrial IOT
- Snapdragon Mobile
📦 What is this software?
Sd7c Firmware by Qualcomm
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing remote attackers to execute arbitrary code with kernel privileges, potentially leading to persistent backdoors, data theft, or device bricking.
Likely Case
Remote code execution leading to application crashes, privilege escalation, or denial of service on affected devices.
If Mitigated
Limited impact with proper network segmentation and device isolation, though local exploitation may still be possible.
🎯 Exploit Status
Exploitation requires sending specially crafted video data to trigger the heap overflow. No public exploit code is available, but the vulnerability is critical with CVSS 9.8.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm security bulletin for specific chipset firmware updates
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/january-2021-bulletin
Restart Required: Yes
Instructions:
1. Check Qualcomm security bulletin for affected chipset models. 2. Contact device manufacturer for firmware updates. 3. Apply firmware patches provided by OEM. 4. Reboot device after patching.
🔧 Temporary Workarounds
Network segmentation
allIsolate affected devices from untrusted networks to prevent remote exploitation
Disable vulnerable services
allDisable or restrict video processing services if not required
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Monitor for anomalous behavior and video processing crashes
🔍 How to Verify
Check if Vulnerable:
Check device chipset model and firmware version against Qualcomm's security bulletinCheck Version:
Device-specific commands vary by manufacturer (e.g., 'getprop ro.build.fingerprint' on Android)Verify Fix Applied:
Verify firmware version has been updated to patched version from manufacturer📡 Detection & Monitoring
Log Indicators:
- Video processing service crashes
- Kernel panic logs
- Memory corruption errors
Network Indicators:
- Unusual video data streams to devices
- Traffic to video processing ports
SIEM Query:
Search for 'video', 'NAL', 'heap overflow', or 'Snapdragon' in crash logs and security events