CVE-2017-8977
📋 TL;DR
A remote denial of service vulnerability in HPE Moonshot Provisioning Manager Appliance allows attackers to crash the service remotely, making it unavailable. This affects organizations using HPE Moonshot Provisioning Manager Appliance version 1.20. The vulnerability stems from improper input validation (CWE-20).
💻 Affected Systems
- Hewlett Packard Enterprise Moonshot Provisioning Manager Appliance
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete service outage of the provisioning manager, disrupting management of Moonshot server cartridges and potentially affecting dependent systems.
Likely Case
Service disruption requiring manual restart of the provisioning manager appliance, causing temporary management unavailability.
If Mitigated
Minimal impact if appliance is behind proper network segmentation and access controls.
🎯 Exploit Status
Remote exploitation without authentication makes this particularly dangerous despite being 'just' DoS.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.21 or later
Vendor Advisory: https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-hpesbhf03803en_us
Restart Required: Yes
Instructions:
1. Download updated firmware from HPE support portal. 2. Backup current configuration. 3. Apply firmware update via appliance management interface. 4. Reboot appliance as directed.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to the provisioning manager appliance to only trusted management networks.
Firewall Rules
allImplement strict firewall rules to limit which IP addresses can communicate with the appliance.
🧯 If You Can't Patch
- Isolate the appliance on a dedicated management VLAN with strict access controls.
- Implement network monitoring and alerting for unusual traffic patterns to the appliance.
🔍 How to Verify
Check if Vulnerable:
Check appliance version via web interface or SSH: Look for version 1.20 in system information.Check Version:
ssh admin@appliance-ip 'show version' or check web admin interfaceVerify Fix Applied:
Verify version is 1.21 or higher after applying update.📡 Detection & Monitoring
Log Indicators:
- Unexpected service crashes/restarts
- High volume of malformed requests
- Connection spikes from single sources
Network Indicators:
- Unusual traffic patterns to provisioning manager ports
- Repeated connection attempts to service ports
SIEM Query:
source="moonshot-provisioning" AND (event="service_crash" OR event="connection_flood")