CVE-2023-52724
📋 TL;DR
CVE-2023-52724 is an out-of-bounds array access vulnerability in Open Networking Foundation SD-RAN's onos-kpimon component. This allows attackers to potentially execute arbitrary code or cause denial of service by exploiting improper bounds checking in the processIndicationFormat1 function. Organizations using SD-RAN deployments with vulnerable onos-kpimon versions are affected.
💻 Affected Systems
- Open Networking Foundation SD-RAN onos-kpimon
📦 What is this software?
Onos Kpimon by Linuxfoundation
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete compromise of the SD-RAN controller, allowing attacker to manipulate network traffic, disrupt cellular services, or pivot to other network segments.
Likely Case
Denial of service causing SD-RAN controller instability or crashes, disrupting cellular network management and potentially affecting service availability.
If Mitigated
Limited impact with proper network segmentation and access controls, potentially only causing isolated service disruption.
🎯 Exploit Status
Exploitation requires sending specially crafted messages to the vulnerable function, but detailed exploitation techniques are not publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in onos-kpimon versions after 0.4.7; check GitHub repository for latest patched version
Vendor Advisory: https://github.com/onosproject/onos-kpimon/pull/120
Restart Required: Yes
Instructions:
1. Update onos-kpimon component to latest version. 2. Restart SD-RAN controller services. 3. Verify the fix by checking version and monitoring for stability.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict network access to SD-RAN controllers to only authorized management systems and interfaces
iptables -A INPUT -p tcp --dport [SD-RAN_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [SD-RAN_PORT] -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit who can communicate with SD-RAN controllers
- Monitor SD-RAN controller logs for abnormal behavior or crash events indicating exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check onos-kpimon component version: kubectl get pods -n onos | grep kpimon or check deployment manifests for version 0.4.7Check Version:
kubectl describe pod [kpimon-pod-name] -n onos | grep ImageVerify Fix Applied:
Verify updated version is deployed and monitor for stability; check GitHub commit history for inclusion of fix from PR #120📡 Detection & Monitoring
Log Indicators:
- SD-RAN controller crashes or restarts
- Error messages related to processIndicationFormat1 function
- Memory access violation logs
Network Indicators:
- Unusual traffic patterns to SD-RAN controller ports
- Multiple connection attempts from unauthorized sources
SIEM Query:
source="onos-logs" AND ("processIndicationFormat1" OR "out of bounds" OR "segmentation fault")