CVE-2025-31964
📋 TL;DR
This vulnerability in HCL BigFix IVR 4.2 allows privileged attackers to disrupt service availability by exploiting administrative services bound to external network interfaces instead of local authentication interfaces. Only systems running the affected version with improper service binding configurations are impacted. Attackers need existing privileged access to exploit this issue.
💻 Affected Systems
- HCL BigFix IVR
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Service disruption or denial of service affecting BigFix IVR functionality, potentially impacting patch management and endpoint security operations.
Likely Case
Local privilege escalation leading to service disruption within the affected component, requiring attacker to already have privileged access.
If Mitigated
Minimal impact if services are properly bound to local authentication interfaces and network segmentation is implemented.
🎯 Exploit Status
Exploitation requires privileged attacker access and knowledge of service binding configurations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patch version
Vendor Advisory: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0127753
Restart Required: Yes
Instructions:
1. Review vendor advisory KB0127753. 2. Apply recommended patch from HCL. 3. Restart affected services. 4. Verify service binding configurations are corrected.
🔧 Temporary Workarounds
Configure Service Binding
allEnsure administrative services are bound only to local authentication interfaces instead of external network interfaces.
Review and modify service binding configurations per HCL documentation
Network Segmentation
allImplement network segmentation to restrict access to administrative services.
Configure firewall rules to limit access to administrative interfaces
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to restrict access to administrative services
- Monitor for unauthorized access attempts to administrative interfaces and review service binding configurations regularly
🔍 How to Verify
Check if Vulnerable:
Check if running HCL BigFix IVR version 4.2 and review service binding configurations for improper external interface binding.Check Version:
Check BigFix IVR version through administrative console or system documentationVerify Fix Applied:
Verify patch installation and confirm administrative services are properly bound to local authentication interfaces only.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to administrative services
- Service disruption logs
- Configuration change alerts for service binding
Network Indicators:
- Unexpected network traffic to administrative service ports
- Connection attempts to administrative interfaces from unauthorized sources
SIEM Query:
Search for authentication failures or access attempts to BigFix IVR administrative services from non-local interfaces