CVE-2023-24011
📋 TL;DR
This vulnerability allows attackers with valid certificates to create malicious DDS Participants or ROS 2 Nodes that can compromise and gain full control of secure DDS databus systems. It affects systems using non-compliant implementations of permission document verification in DDS vendors' software, specifically those improperly using OpenSSL's PKCS7_verify function for S/MIME signature validation.
💻 Affected Systems
- ROS 2 sros2
- DDS implementations with non-compliant permission document verification
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the DDS databus system, allowing attackers to intercept, modify, or inject data, potentially leading to system takeover or data exfiltration.
Likely Case
Unauthorized access to the DDS databus, enabling data manipulation, eavesdropping, or denial of service against legitimate participants.
If Mitigated
Limited impact with proper certificate validation and network segmentation, though some risk remains if certificates are compromised.
🎯 Exploit Status
Exploitation requires valid certificates but improper validation allows crafted malicious participants to bypass security controls.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor-specific updates for ROS 2 sros2 and DDS implementations
Vendor Advisory: https://github.com/ros2/sros2/issues/282
Restart Required: No
Instructions:
1. Update ROS 2 sros2 to the latest version. 2. Apply patches from DDS vendors addressing PKCS7_verify implementation. 3. Verify permission document validation complies with DDS security specifications.
🔧 Temporary Workarounds
Strict Certificate Validation
allImplement additional validation checks for certificates and permission documents beyond PKCS7_verify.
🧯 If You Can't Patch
- Implement network segmentation to isolate DDS databus from untrusted networks.
- Use application-level encryption for sensitive data transmitted over DDS.
🔍 How to Verify
Check if Vulnerable:
Check if your DDS implementation uses OpenSSL's PKCS7_verify for S/MIME signature validation without proper permission document checks.Check Version:
ros2 version (for ROS 2 systems) or vendor-specific version commands for DDS implementations.Verify Fix Applied:
Verify that permission documents are validated according to DDS security specifications and test with crafted certificates.📡 Detection & Monitoring
Log Indicators:
- Unauthorized DDS participant connections
- Certificate validation failures
- Permission document verification errors
Network Indicators:
- Unusual DDS traffic patterns
- Connections from unexpected IPs to DDS ports
SIEM Query:
source="dds_logs" AND (event_type="participant_join" AND certificate_validation="failed")