CVE-2024-10455
📋 TL;DR
A reachable assertion vulnerability in the BPv7 parser of µD3TN v0.14.0 allows attackers to cause denial of service by sending malformed Extension Blocks. This affects systems running µD3TN for Delay-Tolerant Networking communications, potentially disrupting data transmission services.
💻 Affected Systems
- µD3TN (micro Delay-Tolerant Networking)
📦 What is this software?
Ud3tn by D3tn
⚠️ Risk & Real-World Impact
Worst Case
Complete service disruption causing µD3TN process termination and loss of DTN communications
Likely Case
Service interruption requiring manual restart of µD3TN processes
If Mitigated
Minimal impact with proper network segmentation and monitoring
🎯 Exploit Status
Simple malformed packet construction can trigger the assertion
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.15.0 or later
Vendor Advisory: https://gitlab.com/d3tn/ud3tn/-/issues/227
Restart Required: Yes
Instructions:
1. Download latest µD3TN release from GitLab. 2. Stop µD3TN service. 3. Install new version. 4. Restart µD3TN service.
🔧 Temporary Workarounds
Network Filtering
linuxBlock malformed Extension Blocks at network perimeter
iptables -A INPUT -p tcp --dport <ud3tn-port> -m string --string "malformed-pattern" --algo bm -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate µD3TN from untrusted networks
- Deploy intrusion detection systems to monitor for malformed BPv7 traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check µD3TN version: if running v0.14.0, system is vulnerableCheck Version:
ud3tn --versionVerify Fix Applied:
Verify µD3TN version is v0.15.0 or later and service runs without assertion errors📡 Detection & Monitoring
Log Indicators:
- Assertion failure logs in µD3TN output
- Process termination/crash logs
Network Indicators:
- Unusual BPv7 Extension Block patterns
- Repeated connection attempts to µD3TN port
SIEM Query:
source="ud3tn.log" AND ("assertion" OR "terminated unexpectedly")