CVE-2023-22747
📋 TL;DR
CVE-2023-22747 allows unauthenticated attackers to execute arbitrary commands on Aruba access points by sending malicious packets to UDP port 8211. This enables remote code execution with privileged system access. Organizations using vulnerable Aruba access points are affected.
💻 Affected Systems
- ArubaOS
- Aruba InstantOS
📦 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, allowing attackers to establish persistent access, pivot to internal networks, and disrupt wireless services.
Likely Case
Attackers gain control of access points to intercept network traffic, deploy malware, or use as footholds for lateral movement.
If Mitigated
Limited impact through network segmentation and proper access controls, though vulnerable devices remain at risk.
🎯 Exploit Status
Exploitation requires sending crafted UDP packets to port 8211. Multiple public exploits exist.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ArubaOS: 8.6.0.21, 8.10.0.5, 10.3.1.1; Aruba InstantOS: 6.4.4.8-4.3.0.14, 6.5.4.21, 8.6.0.19, 8.7.1.14, 8.10.0.5
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 configuration. 3. Apply firmware update via web interface or CLI. 4. Reboot device. 5. Verify update and functionality.
🔧 Temporary Workarounds
Block PAPI UDP Port
allBlock UDP port 8211 at network perimeter and internal segmentation points
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 Protocol
linuxDisable PAPI protocol on Aruba access points if not required
no papi
🧯 If You Can't Patch
- Segment wireless network from critical assets using VLANs and firewall rules
- Implement strict network access controls to limit communication with UDP port 8211
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface or CLI command 'show version' and compare against vulnerable versionsCheck Version:
show versionVerify Fix Applied:
Verify firmware version is patched and test connectivity to UDP port 8211 is blocked or PAPI is disabled📡 Detection & Monitoring
Log Indicators:
- Unexpected PAPI protocol activity
- Unauthorized configuration changes
- Unusual process execution on access points
Network Indicators:
- UDP traffic to port 8211 from unexpected sources
- Malformed PAPI packets
- Multiple connection attempts to port 8211
SIEM Query:
source_port=8211 OR dest_port=8211 AND protocol=UDP AND (bytes>1000 OR packet_count>10)