CVE-2023-28573
📋 TL;DR
This vulnerability allows memory corruption in Qualcomm's WLAN Hardware Abstraction Layer (HAL) when parsing WMI command parameters. Attackers could potentially execute arbitrary code or cause denial of service on affected devices. This affects devices using Qualcomm wireless chipsets with vulnerable firmware.
💻 Affected Systems
- Qualcomm WLAN chipsets/firmware
📦 What is this software?
Snapdragon Xr2\+ Gen 1 Firmware by Qualcomm
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with kernel privileges leading to complete device compromise, data theft, or persistent backdoor installation.
Likely Case
Device crash/reboot (denial of service) or limited code execution in WLAN subsystem context.
If Mitigated
Denial of service only if exploit fails or memory protections limit impact.
🎯 Exploit Status
Exploitation requires sending crafted WMI commands to WLAN interface. No public exploit available as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to September 2023 Qualcomm security bulletin for specific patched versions
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/september-2023-bulletin
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for affected chipset/firmware versions. 2. Obtain firmware update from device manufacturer. 3. Apply firmware update following manufacturer instructions. 4. Reboot device to activate new firmware.
🔧 Temporary Workarounds
Disable WLAN if not needed
linuxTurn off wireless functionality to prevent exploitation
nmcli radio wifi off
ip link set wlan0 down
Network segmentation
allIsolate wireless networks from critical systems
🧯 If You Can't Patch
- Implement strict network access controls to WLAN interfaces
- Monitor for unusual WLAN traffic patterns or device crashes
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm's advisory. Use 'dmesg | grep -i wlan' or 'iwconfig' to identify WLAN chipset.Check Version:
cat /sys/class/net/wlan0/device/firmware_version 2>/dev/null || dmesg | grep -i firmwareVerify Fix Applied:
Verify firmware version has been updated to patched version. Check Qualcomm bulletin for fixed versions.📡 Detection & Monitoring
Log Indicators:
- Kernel panics related to WLAN driver
- WLAN interface resets/crashes
- Unusual WMI command patterns in driver logs
Network Indicators:
- Malformed WMI packets to WLAN MAC addresses
- Unusual broadcast/multicast traffic on wireless networks
SIEM Query:
source="kernel" AND ("WLAN" OR "wmi") AND ("panic" OR "corruption" OR "oops")