CVE-2024-47065
📋 TL;DR
This vulnerability in Meshtastic allows attackers to abuse traceroute functionality to force remote nodes to continuously respond, enabling rapid collection of SNR measurements that can compromise positional confidentiality. Attackers can also potentially create a 2:1 reflected DoS attack on the network. All Meshtastic users running versions before 2.5.1 are affected.
💻 Affected Systems
- Meshtastic firmware
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers can rapidly triangulate node positions by collecting SNR measurements, compromising user privacy and location confidentiality, while also potentially disrupting network communications through reflected DoS attacks.
Likely Case
Attackers exploit the vulnerability to gather SNR measurements from remote nodes much faster than passive collection, enabling location tracking and privacy violations against mesh network participants.
If Mitigated
With proper rate limiting implemented, traceroute responses are controlled, preventing rapid data collection and reducing the effectiveness of location tracking attacks.
🎯 Exploit Status
The vulnerability requires network access to Meshtastic nodes but no authentication. Exploitation is straightforward using standard network tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.5.1
Vendor Advisory: https://github.com/meshtastic/firmware/security/advisories/GHSA-4hjx-54gf-2jh7
Restart Required: Yes
Instructions:
1. Download Meshtastic firmware version 2.5.1 or later from the official repository. 2. Flash the firmware to all affected devices. 3. Restart all devices to apply the update.
🔧 Temporary Workarounds
Disable traceroute functionality
allDisable traceroute responses on all Meshtastic nodes to prevent exploitation
Configure node settings to disable traceroute responses
Network segmentation
allIsolate Meshtastic networks from untrusted networks to limit attack surface
🧯 If You Can't Patch
- Segment Meshtastic networks from untrusted networks and internet exposure
- Monitor network traffic for abnormal traceroute patterns and implement rate limiting at network perimeter
🔍 How to Verify
Check if Vulnerable:
Check if Meshtastic firmware version is below 2.5.1. Test by sending multiple traceroute requests to a node and observing if responses are rate limited.Check Version:
Check device firmware version through Meshtastic device info or configuration interfaceVerify Fix Applied:
After updating to 2.5.1 or later, test traceroute functionality to confirm responses are properly rate limited and cannot be abused for rapid data collection.📡 Detection & Monitoring
Log Indicators:
- High frequency of traceroute responses from nodes
- Abnormal SNR measurement collection patterns
Network Indicators:
- Unusually high volume of traceroute traffic to/from Meshtastic nodes
- Patterns of rapid sequential traceroute requests
SIEM Query:
source_ip="meshtastic_node" AND protocol="traceroute" AND count > 100 within 2 minutes