CVE-2020-11177
📋 TL;DR
This vulnerability allows attackers to bypass security code protection on Qualcomm Snapdragon chipsets by overwriting Security Code NV items without knowing the current SPC (Service Programming Code). It affects numerous Snapdragon platforms including automotive, mobile, IoT, wearables, and computing devices.
💻 Affected Systems
- Snapdragon Auto
- Snapdragon Compute
- Snapdragon Connectivity
- Snapdragon Consumer IOT
- Snapdragon Industrial IOT
- Snapdragon IoT
- Snapdragon Mobile
- Snapdragon Voice & Music
- Snapdragon Wearables
📦 What is this software?
Sd8c Firmware by Qualcomm
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to reprogram device security settings, unlock carrier-locked devices, bypass device protection mechanisms, and potentially gain persistent access to the hardware.
Likely Case
Unauthorized device unlocking, carrier lock bypass, and security feature circumvention leading to potential data access or device repurposing.
If Mitigated
Limited impact if devices are physically secured and not exposed to malicious actors with physical or local access.
🎯 Exploit Status
Exploitation requires access to device programming interfaces and knowledge of the vulnerability; no public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm security bulletin for specific chipset/firmware versions
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/february-2021-bulletin
Restart Required: Yes
Instructions:
1. Check Qualcomm security bulletin for affected chipset versions. 2. Contact device manufacturer for firmware updates. 3. Apply firmware/software patches provided by OEM. 4. Reboot device after patch installation.
🔧 Temporary Workarounds
Physical Security Controls
allRestrict physical access to devices to prevent local exploitation
Device Lock Policies
allImplement strict device management policies and monitoring
🧯 If You Can't Patch
- Implement strict physical security controls for all affected devices
- Monitor for unauthorized device access or configuration changes
🔍 How to Verify
Check if Vulnerable:
Check device chipset model and firmware version against Qualcomm security bulletinCheck Version:
Device-specific commands vary by manufacturer; typically in device settings or using manufacturer diagnostic toolsVerify Fix Applied:
Verify firmware version has been updated to patched version from device manufacturer📡 Detection & Monitoring
Log Indicators:
- Unauthorized SPC/NV item modification attempts
- Security code reset events
- Device unlock events without proper authentication
Network Indicators:
- Unusual device programming interface access
SIEM Query:
Search for security code modification events or device unlock events in device management logs