CVE-2023-34983

What it actually does

The vulnerability allows an unauthenticated adjacent attacker to send malformed network frames that bypass input validation checks in the Wi-Fi driver or software, resulting in a denial of service condition that disrupts wireless connectivity.

Why it matters to the business

Affected devices may experience intermittent or complete loss of Wi-Fi connectivity, leading to operational disruptions for users relying on wireless networks without requiring physical access or authentication.

How an attack unfolds

An attacker within wireless range crafts and transmits specially malformed 802.11 frames to the target device. The software fails to properly validate the input, causing the Wi-Fi stack to crash or hang, denying service to legitimate users.

How to fix it

Update Intel PROSet/Wireless or Killer Wi-Fi software to version 22.240 or later to address the input validation issue.

How to confirm the fix worked

Verify the installed Wi-Fi software version is 22.240 or higher and test connectivity under simulated adjacent network conditions.

Typical attack path

1. Position within adjacent wireless range
2. Craft malformed 802.11 management or data frames
3. Transmit frames to trigger improper validation
4. Observe denial of service on target device

How to detect it

Review system logs for Wi-Fi driver crashes or unexpected restarts around the time of suspected incidents; look for patterns of wireless disconnections without obvious causes.

What your security team should do

• Prioritize updating affected Intel Wi-Fi software across the organization
• Monitor for wireless connectivity anomalies
• Restrict adjacent network access where possible until patched