CVE-2024-20137
📋 TL;DR
This vulnerability in MediaTek wlan drivers allows remote attackers to cause denial of service by forcing client disconnections without authentication. It affects devices using vulnerable MediaTek wireless chipsets. No user interaction is required for exploitation.
💻 Affected Systems
- MediaTek wireless chipsets with vulnerable wlan drivers
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Persistent wireless network disruption affecting all vulnerable clients, rendering wireless connectivity unusable
Likely Case
Intermittent client disconnections causing network instability and service interruptions
If Mitigated
Minimal impact with proper network segmentation and monitoring
🎯 Exploit Status
Exploitation requires sending specially crafted packets to trigger exceptional condition handling
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: WCNCR00384543
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/December-2024
Restart Required: Yes
Instructions:
1. Contact device manufacturer for firmware updates. 2. Apply MediaTek patch WCNCR00384543. 3. Update device firmware. 4. Reboot device.
🔧 Temporary Workarounds
Network segmentation
allIsolate vulnerable devices to separate network segments
Wireless isolation
allEnable client isolation on wireless access points
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Monitor for unusual disconnection patterns and wireless anomalies
🔍 How to Verify
Check if Vulnerable:
Check device specifications for MediaTek wireless chipset and consult manufacturer for patch statusCheck Version:
Device-specific commands vary by manufacturer; typically in device settings or using manufacturer diagnostic toolsVerify Fix Applied:
Verify patch WCNCR00384543 is applied through device firmware version check📡 Detection & Monitoring
Log Indicators:
- Unexpected client disconnections
- WLAN driver error messages
- Authentication timeouts
Network Indicators:
- Unusual broadcast/multicast traffic patterns
- Excessive deauthentication frames
SIEM Query:
wireless AND (disconnect OR deauth OR association) AND frequency > threshold