CVE-2024-23961
📋 TL;DR
This vulnerability allows physically present attackers to execute arbitrary code with root privileges on Alpine Halo9 infotainment systems without authentication. Attackers can inject malicious commands through the UPDM_wemCmdUpdFSpeDecomp function due to improper input validation. Only Alpine Halo9 devices with the vulnerable firmware are affected.
💻 Affected Systems
- Alpine Halo9
📦 What is this software?
Ilx F509 Firmware by Alpsalpine
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with root-level code execution, allowing attackers to install persistent malware, steal vehicle data, or disable critical systems.
Likely Case
Local attacker gains root shell access to modify system settings, install unauthorized applications, or access vehicle networks.
If Mitigated
Physical access controls prevent unauthorized individuals from reaching the device interface.
🎯 Exploit Status
Command injection vulnerabilities typically have low exploitation complexity. Physical access requirement reduces widespread risk.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in available references
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-24-849/
Restart Required: Yes
Instructions:
1. Contact Alpine support for firmware updates. 2. Download latest firmware from official Alpine sources. 3. Install update via USB following manufacturer instructions. 4. Verify installation and restart system.
🔧 Temporary Workarounds
Physical Access Restriction
allPrevent unauthorized physical access to the vehicle and infotainment system
Disable Unnecessary Services
linuxIf possible, disable the vulnerable service component until patched
🧯 If You Can't Patch
- Restrict physical access to vehicles with vulnerable systems
- Implement strict physical security controls around affected vehicles
🔍 How to Verify
Check if Vulnerable:
Check firmware version against vendor advisory. Test for command injection in UPDM_wemCmdUpdFSpeDecomp function if possible.Check Version:
Check system information in device settings menu or consult manufacturer documentationVerify Fix Applied:
Verify firmware version matches patched version from vendor. Test that command injection attempts no longer succeed.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns
- System calls with unexpected parameters
- Root privilege escalation attempts
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
Not applicable due to physical access requirement