CVE-2022-33307
📋 TL;DR
CVE-2022-33307 is a double-free memory corruption vulnerability in Qualcomm automotive components that allows attackers to execute arbitrary code or cause denial of service. This affects automotive systems using vulnerable Qualcomm chipsets when a malicious HLOS address is passed. The vulnerability primarily impacts automotive manufacturers and suppliers using affected Qualcomm hardware.
💻 Affected Systems
- Qualcomm automotive chipsets and platforms
📦 What is this software?
Snapdragon 675 Mobile Platform Firmware by Qualcomm
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Snapdragon 850 Mobile Compute Platform Firmware by Qualcomm
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Snapdragon Ar2 Gen 1 Platform Firmware by Qualcomm
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Snapdragon X24 Lte Modem Firmware by Qualcomm
Snapdragon X50 5g Modem Rf System Firmware by Qualcomm
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Snapdragon X55 5g Modem Rf System Firmware by Qualcomm
View all CVEs affecting Snapdragon X55 5g Modem Rf System Firmware →
Snapdragon Xr2 5g Platform Firmware by Qualcomm
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Vision Intelligence 300 Platform Firmware by Qualcomm
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⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete vehicle system compromise, potentially affecting safety-critical functions like braking or steering control.
Likely Case
Local privilege escalation allowing attackers to gain elevated privileges on the automotive system, potentially accessing sensitive vehicle data or functions.
If Mitigated
Denial of service affecting non-critical vehicle systems or applications without compromising safety functions.
🎯 Exploit Status
Exploitation requires passing a malicious HLOS address to trigger the double-free condition. This typically requires some level of access to the automotive system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: June 2023 security updates and later
Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/june-2023-bulletin
Restart Required: Yes
Instructions:
1. Contact Qualcomm or your automotive supplier for specific patch information. 2. Apply the June 2023 or later security updates for your automotive platform. 3. Reboot the affected automotive systems after patching. 4. Verify the patch is applied correctly.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement additional validation for HLOS address parameters before processing
Requires code modification - no simple command
Memory Protection
linuxEnable memory protection features like ASLR and stack canaries if available
echo 2 > /proc/sys/kernel/randomize_va_space
Recompile with -fstack-protector-all flag
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized access to automotive systems
- Segment automotive networks to limit potential lateral movement if compromised
🔍 How to Verify
Check if Vulnerable:
Check Qualcomm chipset version and compare against June 2023 security bulletin. Use vendor-specific diagnostic tools for automotive platforms.Check Version:
Vendor-specific commands vary by automotive platform. Consult manufacturer documentation for version checking.Verify Fix Applied:
Verify that June 2023 or later security patches are installed. Check system logs for successful patch application.📡 Detection & Monitoring
Log Indicators:
- Multiple free() calls on same memory address
- Memory corruption errors in automotive system logs
- Unexpected process crashes in automotive applications
Network Indicators:
- Unusual automotive bus traffic patterns
- Unauthorized access attempts to automotive control systems
SIEM Query:
source="automotive_system" AND (event_type="memory_error" OR event_type="double_free")