CVE-2023-22749
📋 TL;DR
CVE-2023-22749 allows unauthenticated attackers to execute arbitrary commands on Aruba access points by sending malicious packets to the PAPI UDP port 8211. This affects ArubaOS and Aruba InstantOS access points and controllers, enabling remote code execution with privileged access.
💻 Affected Systems
- Aruba Mobility Controllers
- ArubaOS
- Aruba InstantOS
- Aruba Access Points
📦 What is this software?
Arubaos by Arubanetworks
Arubaos by Arubanetworks
Arubaos by Arubanetworks
Sd Wan by Arubanetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of affected access points/controllers, allowing attackers to establish persistent access, pivot to internal networks, and disrupt wireless services.
Likely Case
Unauthenticated remote code execution leading to network reconnaissance, credential theft, and potential lateral movement within the network.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external access to PAPI port 8211.
🎯 Exploit Status
Exploitation requires sending specially crafted UDP packets to port 8211. Multiple proof-of-concept exploits are publicly available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ArubaOS: 8.10.0.6, 10.3.1.2; Aruba InstantOS: 8.10.0.3, 8.11.0.1
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2023-002.txt
Restart Required: Yes
Instructions:
1. Download appropriate firmware from Aruba support portal. 2. Backup current configuration. 3. Apply firmware update via web interface or CLI. 4. Reboot device. 5. Verify updated version.
🔧 Temporary Workarounds
Block PAPI Port Access
allRestrict network access to UDP port 8211 using firewall rules to prevent exploitation.
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
allDisable the PAPI service on affected devices if not required for management.
(Aruba CLI) no papi-server enable
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices from untrusted networks.
- Deploy intrusion detection/prevention systems to monitor for exploitation attempts on port 8211.
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against affected versions list. Use nmap to scan for open UDP port 8211: nmap -sU -p 8211 <target_ip>Check Version:
(Aruba CLI) show version | include VersionVerify Fix Applied:
Verify firmware version is patched: (Aruba CLI) show version. Confirm PAPI service is disabled or port 8211 is not accessible.📡 Detection & Monitoring
Log Indicators:
- Unusual UDP traffic to port 8211
- Failed authentication attempts on PAPI service
- Unexpected process execution on access points
Network Indicators:
- Malformed UDP packets to port 8211
- Unusual outbound connections from access points
- Traffic patterns indicating command execution
SIEM Query:
source_port=8211 OR dest_port=8211 protocol=UDP | stats count by src_ip, dest_ip