CVE-2021-37730
📋 TL;DR
This CVE allows remote attackers to execute arbitrary commands on affected HPE Aruba Instant Access Points (IAPs) without authentication. The vulnerability affects multiple versions of Aruba Instant software across different release branches. Organizations using vulnerable IAPs are at risk of complete system compromise.
💻 Affected Systems
- HPE Aruba Instant Access Points (IAPs)
📦 What is this software?
Aruba Instant by Arubanetworks
Aruba Instant by Arubanetworks
Aruba Instant by Arubanetworks
Aruba Instant by Arubanetworks
Aruba Instant by Arubanetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the wireless network infrastructure, allowing attackers to intercept traffic, deploy malware, pivot to internal networks, and disrupt operations.
Likely Case
Attackers gain administrative control over IAPs, enabling them to reconfigure network settings, capture credentials, and use the devices as footholds for lateral movement.
If Mitigated
Limited impact if network segmentation isolates IAPs and strict access controls prevent external exploitation attempts.
🎯 Exploit Status
The CWE-78 (OS Command Injection) vulnerability typically requires minimal technical skill to exploit once details are known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Aruba Instant 6.4.4.8-4.2.4.19+, 6.5.4.21+, 8.5.0.13+, 8.6.0.12+, 8.7.1.4+
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-017.txt
Restart Required: Yes
Instructions:
1. Download the appropriate patched firmware from Aruba support portal. 2. Backup current configuration. 3. Upload and apply firmware update through IAP web interface or CLI. 4. Reboot IAPs after update. 5. Verify successful update and functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate IAP management interfaces from untrusted networks
Access Control Lists
allRestrict management interface access to trusted IP addresses only
🧯 If You Can't Patch
- Immediately isolate affected IAPs from internet-facing networks
- Implement strict network monitoring and alerting for suspicious IAP management traffic
🔍 How to Verify
Check if Vulnerable:
Check IAP firmware version via web interface (System > Status) or CLI (show version)Check Version:
show versionVerify Fix Applied:
Confirm firmware version is patched (6.4.4.8-4.2.4.19+, 6.5.4.21+, 8.5.0.13+, 8.6.0.12+, 8.7.1.4+)📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Unexpected configuration changes
- Authentication attempts from unusual sources
Network Indicators:
- Unexpected outbound connections from IAPs
- Suspicious traffic to IAP management interfaces
SIEM Query:
source="aruba-iap" AND (event_type="command_execution" OR event_type="config_change")