CVE-2024-34473
📋 TL;DR
This vulnerability in O-RAN Near-RT RIC's appmgr allows attackers to register unintended RMR message types during xApp registration, potentially disrupting other service components. It affects O-RAN Near-RT RIC deployments using the vulnerable appmgr component. The issue stems from improper input validation (CWE-20).
💻 Affected Systems
- O-RAN Near-RT RIC
⚠️ 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 disruption of O-RAN Near-RT RIC services through denial of service, potentially affecting network operations and causing service outages.
Likely Case
Partial service disruption affecting specific xApps or components, leading to degraded network performance.
If Mitigated
Minimal impact with proper input validation and monitoring in place.
🎯 Exploit Status
Requires ability to register xApps and knowledge of RMR message types.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check O-RAN SC Jira RIC-1055 for specific patched versions
Vendor Advisory: https://jira.o-ran-sc.org/browse/RIC-1055
Restart Required: Yes
Instructions:
1. Check O-RAN SC Jira RIC-1055 for patch details. 2. Update Near-RT RIC to patched version. 3. Restart appmgr and affected services. 4. Verify xApp registration functionality.
🔧 Temporary Workarounds
Restrict xApp Registration
linuxLimit xApp registration to trusted sources only
# Configure appmgr to only accept xApp registrations from authorized sources
# Review and update appmgr configuration files
Monitor RMR Message Types
linuxImplement monitoring for unusual RMR message type registrations
# Set up logging for all xApp registration attempts
# Monitor appmgr logs for unexpected message types
🧯 If You Can't Patch
- Implement strict access controls for xApp registration interfaces
- Deploy network segmentation to isolate appmgr from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check appmgr version and review O-RAN SC Jira RIC-1055 for affected versions. Examine xApp registration logs for unusual activity.Check Version:
# Check appmgr version: appmgr --version or consult deployment documentationVerify Fix Applied:
Verify appmgr has been updated to patched version. Test xApp registration with various message types to ensure proper validation.📡 Detection & Monitoring
Log Indicators:
- Unusual xApp registration attempts
- Registration of unexpected RMR message types
- appmgr error messages related to message type validation
Network Indicators:
- Unusual traffic to appmgr registration endpoints
- Multiple xApp registration attempts from single source
SIEM Query:
source="appmgr" AND ("registration" OR "RMR") AND ("error" OR "unexpected" OR "invalid")