CVE-2021-25144
📋 TL;DR
A remote buffer overflow vulnerability in Aruba Instant Access Points allows attackers to execute arbitrary code or cause denial of service. This affects Aruba IAP devices running vulnerable versions of Instant software. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- Aruba Instant Access Point (IAP)
📦 What is this software?
Instant by Arubanetworks
Instant by Arubanetworks
Instant by Arubanetworks
Instant by Arubanetworks
Instant by Arubanetworks
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full device compromise, lateral movement within network, and persistent access
Likely Case
Denial of service causing access point outages and network disruption
If Mitigated
Limited impact with proper network segmentation and access controls
🎯 Exploit Status
Buffer overflow vulnerability (CWE-120) that can be exploited remotely without authentication
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Aruba Instant 6.4.4.8-4.2.4.18+, 6.5.4.17+, 8.3.0.13+, 8.5.0.7+, 8.6.0.3+
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-007.txt
Restart Required: Yes
Instructions:
1. Download latest firmware from Aruba support portal. 2. Upload firmware to IAP cluster virtual controller. 3. Schedule maintenance window. 4. Apply firmware update. 5. Reboot affected devices.
🔧 Temporary Workarounds
Network Segmentation
allIsolate IAP management interfaces from untrusted networks
Access Control Lists
allRestrict management access to trusted IP addresses only
🧯 If You Can't Patch
- Remove internet-facing exposure by placing IAPs behind firewalls
- Implement strict network segmentation to limit potential lateral movement
🔍 How to Verify
Check if Vulnerable:
Check IAP firmware version via web interface or CLICheck Version:
show version (CLI) or check System > Status in web interfaceVerify Fix Applied:
Confirm firmware version is patched: 6.4.4.8-4.2.4.18+, 6.5.4.17+, 8.3.0.13+, 8.5.0.7+, or 8.6.0.3+📡 Detection & Monitoring
Log Indicators:
- Unexpected device reboots
- Memory corruption errors in system logs
- Unusual network traffic to IAP management interfaces
Network Indicators:
- Unusual traffic patterns to IAP management ports
- Exploit attempt signatures in IDS/IPS
SIEM Query:
source="aruba-iap" AND (event_type="crash" OR event_type="reboot" OR message="*buffer*" OR message="*overflow*")