CVE-2024-31481
📋 TL;DR
Unauthenticated attackers can cause Denial of Service (DoS) by exploiting vulnerabilities in the CLI service accessed via the PAPI protocol in Aruba/HPE networking products. This allows interruption of normal service operation without requiring credentials. Affected systems include ArubaOS, Aruba InstantOS, and Aruba Central.
💻 Affected Systems
- ArubaOS
- Aruba InstantOS
- Aruba Central
📦 What is this software?
Arubaos by Arubanetworks
Arubaos by Arubanetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete service disruption of CLI/PAPI functionality, potentially affecting network management and configuration capabilities.
Likely Case
Temporary service interruption causing management interface unavailability until service restart.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external exploitation.
🎯 Exploit Status
Unauthenticated exploitation via PAPI protocol makes this relatively easy to exploit if accessible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Varies by product - see HPE and Aruba advisories for specific fixed versions
Vendor Advisory: https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw04647en_us
Restart Required: Yes
Instructions:
1. Review HPE and Aruba advisories for affected versions. 2. Download and apply appropriate firmware updates. 3. Restart affected services or devices. 4. Verify patch application.
🔧 Temporary Workarounds
Restrict PAPI Access
allLimit PAPI protocol access to trusted management networks only
Configure firewall rules to restrict PAPI port access
Implement network segmentation for management interfaces
Disable Unnecessary Services
allDisable PAPI service if not required for operations
Check vendor documentation for service disable commands specific to your product
🧯 If You Can't Patch
- Implement strict network access controls to limit PAPI service exposure
- Monitor for unusual PAPI traffic patterns and failed service attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against vendor advisory lists of affected versionsCheck Version:
Varies by product - typically 'show version' or similar CLI commandVerify Fix Applied:
Verify firmware version is updated to patched version listed in vendor advisories📡 Detection & Monitoring
Log Indicators:
- Multiple failed PAPI connection attempts
- CLI service restart events
- Unusual PAPI protocol traffic patterns
Network Indicators:
- High volume of PAPI requests from single sources
- PAPI traffic from unexpected network segments
SIEM Query:
source_port:PAPI OR protocol:PAPI AND (event_type:connection_failed OR event_type:service_restart)