CVE-2024-33024

7.5 HIGH

📋 TL;DR

This vulnerability allows an attacker to cause a Denial of Service (DoS) by sending specially crafted Wi-Fi beacon frames with malformed Multi-Link (ML) Information Elements. It affects devices using Qualcomm Wi-Fi chipsets that parse these frames, potentially disrupting wireless connectivity.

💻 Affected Systems

Products:
  • Qualcomm Wi-Fi chipsets and devices using them
Versions: Specific affected versions not publicly detailed in bulletin
Operating Systems: Android, Linux, and other OS using Qualcomm Wi-Fi drivers
Default Config Vulnerable: ⚠️ Yes
Notes: Affects devices with Wi-Fi enabled and using vulnerable Qualcomm firmware/drivers

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete wireless network disruption for affected devices, requiring reboot or reconnection

🟠

Likely Case

Temporary Wi-Fi disconnection or instability on vulnerable devices when malicious beacons are received

🟢

If Mitigated

Minimal impact with proper network segmentation and updated firmware

🌐 Internet-Facing: MEDIUM - Requires proximity to send malicious beacons but no authentication needed
🏢 Internal Only: MEDIUM - Internal attackers could disrupt wireless networks within range

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW - Sending malformed beacon frames is straightforward

Exploitation requires proximity to target device and ability to transmit Wi-Fi frames

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Refer to August 2024 Qualcomm security bulletin for specific patched versions

Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2024-bulletin.html

Restart Required: Yes

Instructions:

1. Check device manufacturer for firmware updates 2. Apply Qualcomm-provided patches 3. Update Wi-Fi driver/firmware 4. Reboot device

🔧 Temporary Workarounds

Disable Wi-Fi when not needed

all

Turn off Wi-Fi on critical devices to prevent beacon reception

Network segmentation

all

Isolate vulnerable devices on separate network segments

🧯 If You Can't Patch

  • Implement physical security controls to limit proximity attacks
  • Use wired connections for critical devices instead of Wi-Fi

🔍 How to Verify

Check if Vulnerable:

Check device specifications for Qualcomm Wi-Fi chipset and firmware version against August 2024 bulletin

Check Version:

Device-specific commands vary by manufacturer (e.g., 'adb shell getprop' for Android, manufacturer diagnostic tools)

Verify Fix Applied:

Verify firmware version has been updated to patched version from manufacturer

📡 Detection & Monitoring

Log Indicators:

  • Wi-Fi disconnection events
  • Driver crash logs
  • Unexpected beacon frame parsing errors

Network Indicators:

  • Unusual beacon frame patterns
  • ML IE length anomalies in packet captures

SIEM Query:

Search for Wi-Fi interface errors, driver crashes, or authentication failures coinciding with beacon reception

🔗 References

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