CVE-2024-31182
📋 TL;DR
A NULL pointer dereference vulnerability in ONF libfluid's libfluid_msg module allows attackers to cause denial of service by exploiting an unchecked return value in the QueuePropertyList::unpack10 routine. This affects systems using libfluid 0.1.0 for OpenFlow protocol communication in software-defined networking environments.
💻 Affected Systems
- Open Networking Foundation libfluid
📦 What is this software?
Libfluid Msg by Opennetworking
⚠️ Risk & Real-World Impact
Worst Case
Complete service disruption of networking functions relying on libfluid, potentially causing network outages in SDN environments.
Likely Case
Application crash or instability in systems using vulnerable libfluid versions for OpenFlow communication.
If Mitigated
Minimal impact if proper input validation and error handling are implemented at application layer.
🎯 Exploit Status
Exploitation requires sending specially crafted OpenFlow messages to trigger the unpack10 routine with specific conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in advisory - check upstream repository
Vendor Advisory: https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2024-31182
Restart Required: Yes
Instructions:
1. Check libfluid version. 2. Update to patched version from upstream repository. 3. Recompile applications using libfluid. 4. Restart affected services.
🔧 Temporary Workarounds
Input Validation Wrapper
allImplement application-level validation of OpenFlow messages before passing to libfluid
# Implement custom validation in application code before calling libfluid functions
Network Segmentation
linuxRestrict OpenFlow protocol access to trusted controllers only
iptables -A INPUT -p tcp --dport 6653 -s trusted_controller_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 6653 -j DROP
🧯 If You Can't Patch
- Implement network controls to restrict OpenFlow traffic to authorized controllers only
- Monitor for abnormal OpenFlow message patterns and application crashes
🔍 How to Verify
Check if Vulnerable:
Check if libfluid 0.1.0 is installed: ldd /path/to/application | grep libfluidCheck Version:
strings /usr/lib/libfluid.so | grep 'libfluid version' || pkg-config --modversion libfluidVerify Fix Applied:
Verify updated libfluid version and test with valid OpenFlow messages📡 Detection & Monitoring
Log Indicators:
- Application segmentation faults
- Unexpected termination of SDN applications
- Error logs mentioning libfluid or unpack10
Network Indicators:
- Unusual OpenFlow message patterns
- Multiple connection attempts to OpenFlow ports (typically 6653)
SIEM Query:
source="application.logs" AND ("segmentation fault" OR "libfluid" OR "unpack10")