CVE-2021-30302
📋 TL;DR
This vulnerability allows improper authentication of EAP WAPI EAPOL frames from unauthenticated users, potentially leading to information disclosure. It affects various Snapdragon chipsets used in compute, connectivity, mobile, and IoT devices. Attackers could exploit this to access sensitive information without proper authentication.
💻 Affected Systems
- Snapdragon Compute
- Snapdragon Connectivity
- Snapdragon Consumer Electronics Connectivity
- Snapdragon Consumer IOT
- Snapdragon Industrial IOT
- Snapdragon Mobile
- Snapdragon Wired Infrastructure and Networking
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Unauthenticated attackers could intercept and access sensitive network communications and device information on vulnerable systems.
Likely Case
Information disclosure of network authentication data and potentially device identifiers in enterprise or public Wi-Fi environments.
If Mitigated
Limited impact with proper network segmentation and updated firmware, though some information leakage might still occur.
🎯 Exploit Status
Exploitation requires proximity to target device and knowledge of WAPI/EAP protocols. No public exploit code has been disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm October 2021 security bulletin for specific patched versions
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/october-2021-bulletin
Restart Required: Yes
Instructions:
1. Check device manufacturer for firmware updates. 2. Apply Qualcomm-provided patches through OEM updates. 3. Reboot device after update installation. 4. Verify patch application through version checks.
🔧 Temporary Workarounds
Disable WAPI Authentication
allDisable WAPI authentication method on affected devices if not required for network connectivity.
Device-specific configuration commands vary by manufacturer
Network Segmentation
allIsolate devices using WAPI authentication on separate network segments with strict access controls.
🧯 If You Can't Patch
- Implement strict network access controls and monitor for unusual authentication attempts
- Disable Wi-Fi on critical devices and use wired connections where possible
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm's October 2021 security bulletin. Use 'getprop ro.build.fingerprint' on Android devices to check chipset and version.Check Version:
Android: getprop ro.build.fingerprint; Linux-based: cat /proc/version or manufacturer-specific version commandsVerify Fix Applied:
Verify firmware version has been updated to a version listed as patched in Qualcomm's advisory. Check that WAPI authentication is properly configured.📡 Detection & Monitoring
Log Indicators:
- Unusual EAP authentication failures
- Multiple WAPI authentication attempts from single source
- Authentication bypass events in Wi-Fi logs
Network Indicators:
- Unencrypted EAPOL frames in WAPI networks
- Authentication requests from unexpected MAC addresses
- Abnormal WAPI protocol traffic patterns
SIEM Query:
source="wifi_logs" AND (event_type="authentication_failure" OR event_type="auth_bypass") AND protocol="WAPI"