CVE-2024-31466
📋 TL;DR
CVE-2024-31466 is a critical buffer overflow vulnerability in Aruba's Access Point management protocol (PAPI) that allows unauthenticated attackers to execute arbitrary code with privileged access by sending specially crafted packets to UDP port 8211. This affects Aruba wireless access points and mobility controllers running vulnerable software versions. Attackers can completely compromise affected devices remotely without any authentication.
💻 Affected Systems
- ArubaOS
- Aruba InstantOS
- Aruba Mobility Controllers
- Aruba Access Points
📦 What is this software?
Arubaos by Arubanetworks
Arubaos by Arubanetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to network-wide compromise, data exfiltration, lateral movement to other systems, and persistent backdoor installation across the wireless infrastructure.
Likely Case
Remote code execution allowing attackers to install malware, steal credentials, intercept network traffic, and pivot to other systems on the network.
If Mitigated
Limited impact if network segmentation, strict firewall rules, and updated firmware prevent exploitation attempts from reaching vulnerable devices.
🎯 Exploit Status
The vulnerability requires no authentication and has a simple exploitation path via UDP packets, making it highly attractive for attackers. While no public PoC exists, the technical details suggest weaponization is likely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ArubaOS 10.5.1.0 and later, Aruba InstantOS 8.12.0.0 and later
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2024-006.txt
Restart Required: Yes
Instructions:
1. Download the latest firmware from Aruba Support Portal. 2. Backup current configuration. 3. Upload and install the firmware update. 4. Reboot the device. 5. Verify the update was successful.
🔧 Temporary Workarounds
Block PAPI UDP Port
allBlock access to UDP port 8211 at network perimeter and internal firewalls to prevent exploitation attempts.
iptables -A INPUT -p udp --dport 8211 -j DROP
netsh advfirewall firewall add rule name="Block Aruba PAPI" dir=in action=block protocol=UDP localport=8211
Disable PAPI Service
linuxDisable the PAPI service on affected devices if not required for management.
no papi-service enable
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices from untrusted networks.
- Deploy intrusion prevention systems (IPS) with signatures for CVE-2024-31466 to block exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check device firmware version and compare against patched versions. Also verify if UDP port 8211 is listening.Check Version:
show versionVerify Fix Applied:
Confirm firmware version is ArubaOS 10.5.1.0+ or Aruba InstantOS 8.12.0.0+. Test that PAPI service still functions properly if needed.📡 Detection & Monitoring
Log Indicators:
- Unexpected process creation
- Privilege escalation events
- Abnormal network connections from AP/controller
Network Indicators:
- Unusual UDP traffic to port 8211
- Malformed PAPI packets
- Exploit kit traffic patterns
SIEM Query:
source_port=8211 OR dest_port=8211 AND (protocol=UDP AND packet_size>normal)