CVE-2023-43545
📋 TL;DR
This CVE describes a memory corruption vulnerability in Qualcomm components where sending excessive scan frequency lists or channels from user space causes buffer overflow. It affects devices using vulnerable Qualcomm chipsets, potentially allowing attackers to execute arbitrary code or cause denial of service.
💻 Affected Systems
- Qualcomm chipsets and devices using affected firmware
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or persistent backdoor installation.
Likely Case
Denial of service through system crashes or reboots, potentially leading to service disruption.
If Mitigated
Limited impact with proper input validation and memory protections in place, possibly just application crashes.
🎯 Exploit Status
Exploitation requires sending specially crafted data to vulnerable interfaces; complexity depends on specific implementation details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Qualcomm June 2024 security bulletin for specific patched firmware versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/june-2024-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm June 2024 security bulletin for affected components. 2. Obtain updated firmware from device manufacturer. 3. Apply firmware update following manufacturer instructions. 4. Reboot device to activate patched firmware.
🔧 Temporary Workarounds
Restrict user-space access
linuxLimit which applications can send scan frequency/channel data to vulnerable interfaces
# Use SELinux/apparmor to restrict access
# Configure application permissions
Input validation enhancement
allImplement additional input validation for scan frequency/channel parameters
# Add bounds checking in application code
# Validate array sizes before processing
🧯 If You Can't Patch
- Segment network to isolate vulnerable devices from untrusted networks
- Implement strict access controls to limit who can interact with vulnerable interfaces
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm's June 2024 security bulletin for affected versionsCheck Version:
# Android: getprop ro.build.fingerprint
# Linux: cat /proc/version or check firmware version via manufacturer toolsVerify Fix Applied:
Verify firmware version has been updated to patched version specified in Qualcomm bulletin📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Memory corruption errors in system logs
- Application crashes related to wireless scanning
Network Indicators:
- Unusual scan frequency/channel requests to wireless interfaces
- Excessive data sent to scanning APIs
SIEM Query:
source="kernel" AND ("panic" OR "corruption" OR "overflow") AND ("scan" OR "frequency" OR "channel")