CVE-2020-11848
📋 TL;DR
This vulnerability in Micro Focus ArcSight Management Center allows attackers to cause denial of service, making the server unavailable. All versions prior to 2.9.5 are affected, potentially disrupting security monitoring operations.
💻 Affected Systems
- Micro Focus ArcSight Management Center
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete server unavailability leading to loss of security monitoring, alerting, and management capabilities for ArcSight deployments.
Likely Case
Service disruption requiring manual intervention to restart affected components, causing temporary security monitoring gaps.
If Mitigated
Minimal impact with proper network segmentation and monitoring in place to detect and respond to attack attempts.
🎯 Exploit Status
Denial of service vulnerabilities typically have low exploitation complexity, though specific exploit details are not publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.9.5
Vendor Advisory: https://community.microfocus.com/t5/ArcSight-Management-Center-ArcMC/ArcSight-Management-Center-2-9-5-Release-Notes/ta-p/2814648
Restart Required: Yes
Instructions:
1. Download ArcSight Management Center version 2.9.5 from Micro Focus support portal. 2. Backup current configuration. 3. Apply the update following Micro Focus upgrade documentation. 4. Restart the ArcSight Management Center service.
🔧 Temporary Workarounds
Network Segmentation
allRestrict access to ArcSight Management Center to trusted networks only
Rate Limiting
allImplement network-level rate limiting to prevent DoS attempts
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Deploy additional monitoring and alerting for ArcSight Management Center availability
🔍 How to Verify
Check if Vulnerable:
Check ArcSight Management Center version via web interface or configuration filesCheck Version:
Check web interface or consult ArcSight documentation for version verificationVerify Fix Applied:
Confirm version is 2.9.5 or later and monitor for service stability📡 Detection & Monitoring
Log Indicators:
- Unusual service restarts
- High resource utilization
- Connection spikes
Network Indicators:
- Unusual traffic patterns to ArcSight Management Center port
- Multiple failed connection attempts
SIEM Query:
source="ArcSight Management Center" AND (event_type="service_restart" OR resource_utilization>90%)