CVE-2025-31987
📋 TL;DR
CVE-2025-31987 is a resource exhaustion vulnerability in HCL Connections Docs where improper validation of uploaded documents can lead to denial of service. Attackers can upload specially crafted documents to consume excessive system resources, potentially crashing the service. This affects organizations using HCL Connections Docs for document management.
💻 Affected Systems
- HCL Connections Docs
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete service outage of HCL Connections Docs, preventing all document uploads, processing, and access until system resources are restored.
Likely Case
Temporary service degradation or intermittent crashes affecting document processing functionality.
If Mitigated
Minimal impact with proper input validation and resource monitoring in place.
🎯 Exploit Status
Exploitation requires ability to upload documents; likely requires authenticated access to the system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Consult vendor advisory for specific patched versions
Vendor Advisory: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0123272
Restart Required: No
Instructions:
1. Review vendor advisory for affected versions. 2. Apply vendor-provided patch or update to fixed version. 3. Test document upload functionality after patching.
🔧 Temporary Workarounds
Restrict document uploads
allTemporarily disable or restrict document upload functionality to prevent exploitation
Implement file validation
allAdd additional file validation checks before processing uploaded documents
🧯 If You Can't Patch
- Implement strict file upload restrictions and size limits
- Monitor system resources and implement automated alerts for resource exhaustion
🔍 How to Verify
Check if Vulnerable:
Check HCL Connections Docs version against vendor advisory; test document upload functionality for resource consumption anomaliesCheck Version:
Consult HCL Connections Docs administration interface or documentation for version checkingVerify Fix Applied:
Verify patch installation and test document uploads with various file types to ensure no resource exhaustion occurs📡 Detection & Monitoring
Log Indicators:
- Unusually large document uploads
- Repeated failed upload attempts
- System resource alerts (CPU/memory spikes)
Network Indicators:
- Abnormal upload traffic patterns
- Multiple large file uploads from single source
SIEM Query:
source="hcl-connections" AND (event="document_upload" AND size>threshold) OR (resource_usage>threshold)