CVE-2023-29468
📋 TL;DR
This vulnerability in Texas Instruments WiLink WL18xx MCP driver allows remote attackers to trigger a buffer overflow via specially crafted management frames containing excessive information elements. Successful exploitation could lead to remote code execution on affected systems. This affects devices using WILINK8-WIFI-MCP8 version 8.5_SP3 and earlier.
💻 Affected Systems
- Texas Instruments WiLink WL18xx MCP driver
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with kernel privileges, allowing complete system compromise and potential lateral movement within the network.
Likely Case
System crashes or denial of service, with potential for limited code execution depending on exploit sophistication.
If Mitigated
Denial of service only if exploit attempts are detected and blocked by network security controls.
🎯 Exploit Status
Exploitation requires crafting specific Wi-Fi management frames but does not require authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: WILINK8-WIFI-MCP8 version 8.6 or later
Vendor Advisory: https://www.ti.com/lit/swra773
Restart Required: Yes
Instructions:
1. Download updated driver from Texas Instruments website. 2. Replace vulnerable driver files. 3. Reboot system to load new driver.
🔧 Temporary Workarounds
Disable Wi-Fi interface
linuxTemporarily disable Wi-Fi functionality to prevent exploitation
sudo ifconfig wlan0 down
Network segmentation
allIsolate affected devices on separate network segments
🧯 If You Can't Patch
- Implement strict network access controls to limit Wi-Fi traffic to trusted sources only.
- Deploy intrusion detection systems to monitor for Wi-Fi frame anomalies and block suspicious traffic.
🔍 How to Verify
Check if Vulnerable:
Check driver version: cat /sys/module/wilink8/version or modinfo wilink8 | grep versionCheck Version:
modinfo wilink8 | grep versionVerify Fix Applied:
Verify driver version is 8.6 or higher after patching📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Driver crash messages in system logs
- Unexpected Wi-Fi disconnections
Network Indicators:
- Unusual Wi-Fi management frame patterns
- Excessive information elements in beacon/probe frames
SIEM Query:
source="kernel" AND ("panic" OR "oops") AND ("wilink8" OR "wifi driver")