CVE-2024-31194
📋 TL;DR
An out-of-bounds read vulnerability in ONF libfluid's libfluid_msg module allows attackers to read memory beyond intended boundaries when processing MultipartReplyPortStats messages. This affects systems using libfluid 0.1.0 for Software-Defined Networking (SDN) implementations, potentially exposing sensitive information or causing crashes.
💻 Affected Systems
- Open Networking Foundation libfluid
📦 What is this software?
Libfluid Msg by Opennetworking
⚠️ Risk & Real-World Impact
Worst Case
Information disclosure of sensitive memory contents, denial of service through application crashes, or potential remote code execution if combined with other vulnerabilities.
Likely Case
Application instability, crashes, or limited information disclosure from adjacent memory regions.
If Mitigated
Minimal impact with proper memory protections and network segmentation in place.
🎯 Exploit Status
Exploitation requires sending specially crafted OpenFlow messages to vulnerable endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2024-31194
Restart Required: Yes
Instructions:
1. Monitor ONF for official patch release. 2. Apply patch when available. 3. Restart affected services.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict access to OpenFlow controller ports (typically TCP 6653) to trusted networks only.
iptables -A INPUT -p tcp --dport 6653 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 6653 -j DROP
Disable Vulnerable Feature
allIf possible, disable MultipartReplyPortStats functionality in libfluid configuration.
🧯 If You Can't Patch
- Implement strict network access controls to OpenFlow ports.
- Monitor for abnormal traffic patterns or crashes in libfluid services.
🔍 How to Verify
Check if Vulnerable:
Check if libfluid 0.1.0 is installed and actively using libfluid_msg module.Check Version:
ldconfig -p | grep libfluid || find /usr -name '*libfluid*' -type fVerify Fix Applied:
Verify libfluid version is updated when patch becomes available.📡 Detection & Monitoring
Log Indicators:
- Application crashes in libfluid services
- Memory access violation errors
Network Indicators:
- Unusual OpenFlow MultipartReplyPortStats traffic patterns
- Traffic to OpenFlow controller port 6653 from untrusted sources
SIEM Query:
source="libfluid.log" AND ("segmentation fault" OR "out of bounds" OR "memory violation")