CVE-2024-31174
📋 TL;DR
This vulnerability allows attackers to read memory outside the intended buffer boundaries in the libfluid_msg module of ONF libfluid. It affects systems using libfluid 0.1.0 for OpenFlow protocol communication, potentially exposing sensitive information or causing crashes.
💻 Affected Systems
- Open Networking Foundation (ONF) libfluid
- Software using libfluid_msg module for OpenFlow protocol handling
📦 What is this software?
Libfluid Msg by Opennetworking
⚠️ Risk & Real-World Impact
Worst Case
Information disclosure of sensitive memory contents, potential remote code execution through memory corruption chaining, or denial of service causing network control plane disruption.
Likely Case
Application crash leading to denial of service in OpenFlow controller or network device implementations using libfluid, potentially disrupting SDN network operations.
If Mitigated
Controlled crash with minimal impact if proper memory protections (ASLR, DEP) are enabled and the system has redundancy/failover mechanisms.
🎯 Exploit Status
Exploitation requires sending specially crafted OpenFlow Features Reply messages to vulnerable endpoints. No public exploit code is available as of current knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 0.1.0 (check upstream for specific fixed version)
Vendor Advisory: https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2024-31174
Restart Required: Yes
Instructions:
1. Check current libfluid version. 2. Update to latest version from official ONF repositories. 3. Recompile applications using libfluid. 4. Restart affected services. 5. Verify the fix by testing with valid OpenFlow messages.
🔧 Temporary Workarounds
Network Segmentation
allRestrict OpenFlow traffic to trusted sources only using network ACLs or firewalls
Input Validation
allImplement additional validation of OpenFlow messages before passing to libfluid
🧯 If You Can't Patch
- Isolate affected systems in separate network segments with strict access controls
- Implement monitoring for abnormal OpenFlow message patterns and Features Reply messages
🔍 How to Verify
Check if Vulnerable:
Check if libfluid 0.1.0 is installed: 'ldconfig -p | grep libfluid' or check package manager. Verify if applications use libfluid_msg module.Check Version:
pkg-config --modversion libfluid || check package manager (apt list --installed | grep libfluid, yum list installed | grep libfluid, etc.)Verify Fix Applied:
Confirm libfluid version is updated beyond 0.1.0. Test with valid OpenFlow Features Reply messages to ensure no crashes occur.📡 Detection & Monitoring
Log Indicators:
- Application crashes or segmentation faults in processes using libfluid
- Error messages related to fluid_msg::of10::FeaturesReply::unpack
- Abnormal termination of OpenFlow-related services
Network Indicators:
- Unusual OpenFlow Features Reply messages from untrusted sources
- Malformed OpenFlow packets targeting port 6653 (OpenFlow default)
SIEM Query:
Process:Terminated AND (ImagePath:*libfluid* OR CommandLine:*libfluid*) OR Network:DestinationPort=6653 AND PayloadContains:"FeaturesReply"