CVE-2024-10838
📋 TL;DR
CVE-2024-10838 is an integer underflow vulnerability in Eclipse Cyclone DDS during deserialization that allows unauthenticated attackers to read out-of-bounds heap memory. This can expose sensitive data, memory pointers, and potentially cause denial of service through thread crashes. Any system using vulnerable versions of Eclipse Cyclone DDS is affected.
💻 Affected Systems
- Eclipse Cyclone DDS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through memory disclosure leading to remote code execution, though this requires additional exploitation steps beyond the initial vulnerability.
Likely Case
Denial of service through thread crashes and potential disclosure of sensitive data from heap memory, including secrets and memory layout information.
If Mitigated
Limited impact with proper network segmentation and access controls preventing unauthenticated access to vulnerable services.
🎯 Exploit Status
Exploitation requires sending specially crafted DDS messages to trigger the deserialization flaw.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.10.5
Vendor Advisory: https://github.com/eclipse-cyclonedds/cyclonedds/security/advisories/GHSA-6jj6-w25p-jc42
Restart Required: Yes
Instructions:
1. Download Cyclone DDS version 0.10.5 or later from the official repository. 2. Replace the vulnerable version with the patched version. 3. Rebuild and redeploy any applications using Cyclone DDS. 4. Restart affected services.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict network access to Cyclone DDS endpoints to trusted sources only
iptables -A INPUT -p tcp --dport 7400 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 7400 -j DROP
Disable Unnecessary DDS Services
allDisable DDS services that are not required for your application
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure to trusted sources only
- Monitor for abnormal memory usage patterns and thread crashes in Cyclone DDS processes
🔍 How to Verify
Check if Vulnerable:
Check Cyclone DDS version: ldd path/to/cyclonedds_library | grep cyclone or check application dependenciesCheck Version:
strings path/to/cyclonedds_library | grep 'Cyclone DDS'Verify Fix Applied:
Verify version is 0.10.5 or later and monitor for memory access violations or crashes📡 Detection & Monitoring
Log Indicators:
- Segmentation faults in Cyclone DDS processes
- Memory access violation errors
- Abnormal thread termination
Network Indicators:
- Unusual DDS message patterns
- High volume of malformed DDS packets
SIEM Query:
process_name:"cyclonedds" AND (event_type:"segmentation_fault" OR event_type:"memory_violation")