CVE-2018-11945
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code or cause denial of service via heap overflow in Qualcomm Snapdragon wireless service messaging modules. It affects numerous Snapdragon platforms across automotive, mobile, IoT, wearables, and compute devices when processing broadcast messages.
💻 Affected Systems
- Snapdragon Auto
- Snapdragon Compute
- Snapdragon Consumer Electronics Connectivity
- Snapdragon Consumer IOT
- Snapdragon Industrial IOT
- Snapdragon IoT
- Snapdragon Mobile
- Snapdragon Voice & Music
- Snapdragon Wearables
📦 What is this software?
Snapdragon High Med 2016 Firmware by Qualcomm
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with kernel privileges leading to complete device compromise, data theft, and persistent backdoor installation.
Likely Case
Device crash/reboot (denial of service) or limited code execution in wireless service context.
If Mitigated
Denial of service only if memory protections are enabled, but full exploitation prevented.
🎯 Exploit Status
Exploitation requires crafting malicious broadcast messages but no authentication. Heap overflow exploitation typically requires specific memory layout knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm security bulletins for specific platform firmware updates
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins
Restart Required: Yes
Instructions:
1. Check device manufacturer for firmware updates. 2. Apply Qualcomm-provided firmware patches. 3. Reboot device. 4. Verify patch installation through version checks.
🔧 Temporary Workarounds
Disable vulnerable wireless services
allTemporarily disable wireless broadcast message processing if not required
Device-specific commands vary by platform - consult manufacturer documentation
Network segmentation
allIsolate affected devices from untrusted networks
Configure firewall rules to restrict wireless broadcast traffic
🧯 If You Can't Patch
- Deploy network monitoring for anomalous broadcast traffic patterns
- Implement physical security controls to limit wireless access to devices
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm's affected versions list. Use manufacturer-specific commands to query baseband version.Check Version:
Device-specific (e.g., Android: 'getprop ro.bootloader' or 'cat /proc/version')Verify Fix Applied:
Verify firmware version has been updated to patched release. Check Qualcomm security bulletin for fixed versions.📡 Detection & Monitoring
Log Indicators:
- Unexpected device reboots
- Wireless service crashes
- Memory corruption errors in system logs
Network Indicators:
- Anomalous broadcast message patterns
- Unexpected wireless protocol traffic
SIEM Query:
Wireless broadcast messages with malformed headers or unusual size parameters