CVE-2023-22755
📋 TL;DR
This CVE describes buffer overflow vulnerabilities in Aruba networking devices that allow unauthenticated attackers to execute arbitrary code with privileged system access via specially crafted PAPI protocol packets. Affected systems include Aruba Mobility Controllers and Gateways running vulnerable software versions.
💻 Affected Systems
- Aruba Mobility Controllers
- Aruba Gateways
📦 What is this software?
Arubaos by Arubanetworks
Arubaos by Arubanetworks
Arubaos by Arubanetworks
Sd Wan by Arubanetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attacker to install persistent backdoors, pivot to internal networks, steal sensitive data, and disrupt network operations.
Likely Case
Remote code execution leading to network disruption, data exfiltration, and lateral movement within the network.
If Mitigated
Limited impact if devices are patched, network segmentation is implemented, and PAPI protocol access is restricted.
🎯 Exploit Status
Exploitation requires sending specially crafted packets to the PAPI port (UDP 8211). No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ArubaOS 8.10.0.6, 8.9.0.10, 8.8.0.13, 8.7.1.15, 8.6.0.19 or later
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. Upload and install patched firmware. 4. Reboot device. 5. Verify version after reboot.
🔧 Temporary Workarounds
Block PAPI Protocol Access
allRestrict access to PAPI protocol (UDP port 8211) using firewall rules to only trusted management networks.
# Example firewall rule to block UDP 8211
iptables -A INPUT -p udp --dport 8211 -j DROP
Network Segmentation
allIsolate Aruba devices in separate VLANs with strict access controls to limit attack surface.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Aruba devices from untrusted networks
- Deploy intrusion detection/prevention systems to monitor for PAPI protocol anomalies
🔍 How to Verify
Check if Vulnerable:
Check ArubaOS version via web interface or CLI: show versionCheck Version:
show versionVerify Fix Applied:
Verify installed version is 8.10.0.6, 8.9.0.10, 8.8.0.13, 8.7.1.15, 8.6.0.19 or later📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes
- Unusual PAPI protocol traffic patterns
- Authentication failures from unexpected sources
Network Indicators:
- Unusual traffic to UDP port 8211
- Large or malformed PAPI packets
- Traffic from unexpected source IPs to Aruba devices
SIEM Query:
source_port=8211 OR dest_port=8211 AND (packet_size>threshold OR protocol_anomaly=true)