CVE-2021-25150
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on affected Aruba Instant Access Points (IAPs) by exploiting improper neutralization of special elements in OS commands (CWE-78). Attackers could gain complete control of the device. Affected systems include Aruba Instant IAPs running vulnerable versions of Instant OS.
💻 Affected Systems
- Aruba Instant Access Point (IAP)
📦 What is this software?
Instant by Arubanetworks
Instant by Arubanetworks
Instant by Arubanetworks
Instant by Arubanetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the access point allowing attackers to pivot to internal networks, intercept traffic, deploy malware, or use the device as a persistence point.
Likely Case
Attackers gain administrative access to the access point, enabling them to reconfigure network settings, intercept user traffic, or disrupt wireless services.
If Mitigated
With proper network segmentation and access controls, impact is limited to the compromised access point without lateral movement to critical systems.
🎯 Exploit Status
The vulnerability allows unauthenticated remote command execution, making it highly dangerous. While no public proof-of-concept exists, the nature of the vulnerability suggests exploitation is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Aruba Instant 6.5.4.18+, 8.3.0.14+, 8.5.0.11+, 8.6.0.5+
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-007.txt
Restart Required: Yes
Instructions:
1. Download the patched firmware from Aruba support portal. 2. Backup current configuration. 3. Upload and install the firmware through the web interface or CLI. 4. Reboot the access point. 5. Verify the new version is running.
🔧 Temporary Workarounds
Network Segmentation
allIsolate access points from critical networks and restrict management access to trusted IPs only.
Access Control Lists
allImplement firewall rules to block external access to management interfaces of access points.
🧯 If You Can't Patch
- Immediately isolate affected access points from internet and critical internal networks
- Implement strict network segmentation and monitor for suspicious activity on access point management interfaces
🔍 How to Verify
Check if Vulnerable:
Check the Instant OS version via web interface (System > About) or CLI (show version). Compare against affected version ranges.Check Version:
show version (CLI) or check System > About in web interfaceVerify Fix Applied:
Verify the Instant OS version is 6.5.4.18+, 8.3.0.14+, 8.5.0.11+, or 8.6.0.5+.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Unauthorized configuration changes
- Unexpected reboots or service restarts
Network Indicators:
- Unusual outbound connections from access points
- Traffic to unexpected destinations
- Anomalous management interface access patterns
SIEM Query:
source="aruba-iap" AND (event_type="command_execution" OR config_change="unauthorized")