CVE-2021-25165
📋 TL;DR
This CVE describes an XML External Entity (XXE) vulnerability in Aruba AirWave Management Platform that allows remote attackers to read arbitrary files on the system or conduct server-side request forgery attacks. It affects organizations running AirWave Management Platform versions prior to 8.2.12.1. The vulnerability can be exploited without authentication in certain configurations.
💻 Affected Systems
- Aruba AirWave Management Platform
📦 What is this software?
Airwave by Arubanetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise including sensitive data exfiltration, credential theft, and potential lateral movement within the network.
Likely Case
Unauthorized file reading leading to configuration file access, credential disclosure, and potential privilege escalation.
If Mitigated
Limited impact with proper network segmentation and XML parsing restrictions in place.
🎯 Exploit Status
XXE vulnerabilities are well-understood with public exploit techniques available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.2.12.1 and later
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-010.txt
Restart Required: Yes
Instructions:
1. Download the patch from Aruba support portal. 2. Backup current configuration. 3. Apply the patch following Aruba's upgrade documentation. 4. Restart the AirWave Management Platform service.
🔧 Temporary Workarounds
Disable XML external entity processing
linuxConfigure the XML parser to disable external entity resolution
Specific configuration depends on AirWave implementation - consult Aruba documentation
Network segmentation
allRestrict access to AirWave management interface to trusted networks only
firewall rules to limit access to specific IP ranges
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Deploy web application firewall with XXE protection rules
🔍 How to Verify
Check if Vulnerable:
Check AirWave version via web interface or CLI: version commandCheck Version:
ssh admin@airwave-host 'show version' or check web interfaceVerify Fix Applied:
Verify version is 8.2.12.1 or later and test XXE payloads are rejected📡 Detection & Monitoring
Log Indicators:
- Unusual XML parsing errors
- File access attempts via XML entities
- External entity resolution attempts
Network Indicators:
- HTTP requests with XML content containing external entity references
- Outbound connections initiated by the AirWave server to internal systems
SIEM Query:
source="airwave" AND (message="*XXE*" OR message="*external entity*" OR message="*DOCTYPE*")