CVE-2020-11124
📋 TL;DR
This CVE describes a use-after-free vulnerability in Qualcomm Snapdragon chipsets' diag client map table. An attacker could potentially execute arbitrary code or cause denial of service by exploiting memory corruption after list reallocation. Affected devices include smartphones, automotive systems, IoT devices, and computing platforms using specific Snapdragon processors.
💻 Affected Systems
- Snapdragon Auto
- Snapdragon Compute
- Snapdragon Consumer IOT
- Snapdragon Industrial IOT
- Snapdragon Mobile
- Snapdragon Voice & Music
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with kernel privileges leading to complete device compromise, data theft, or persistent backdoor installation.
Likely Case
Local privilege escalation allowing attackers to gain elevated permissions on affected devices.
If Mitigated
Denial of service or application crash if exploitation attempts are detected and blocked.
🎯 Exploit Status
Exploitation requires local access or ability to execute code on the device. No public exploit code is known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Vendor-specific firmware updates
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/september-2020-bulletin
Restart Required: Yes
Instructions:
1. Check with device manufacturer for firmware updates. 2. Apply Qualcomm-provided patches through OEM update channels. 3. Reboot device after update installation.
🔧 Temporary Workarounds
Restrict diagnostic access
allLimit access to diagnostic interfaces and services on affected devices
🧯 If You Can't Patch
- Segment affected devices from critical networks
- Implement strict access controls and monitoring for devices with vulnerable chipsets
🔍 How to Verify
Check if Vulnerable:
Check device chipset model and firmware version against Qualcomm's advisoryCheck Version:
Device-specific commands vary by manufacturer (e.g., Android: 'getprop ro.bootloader' or check Settings > About)Verify Fix Applied:
Verify firmware version has been updated to patched version from manufacturer📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Memory corruption errors in system logs
- Unexpected process crashes
Network Indicators:
- Unusual diagnostic protocol traffic
- Suspicious local service connections
SIEM Query:
Search for kernel panic events or memory corruption errors in device logs