CVE-2025-36160
📋 TL;DR
IBM Concert versions 1.0.0 through 2.0.0 disclose sensitive server information via HTTP response headers. This information leakage could help attackers gather intelligence for further attacks against the system. Organizations running affected IBM Concert versions are vulnerable.
💻 Affected Systems
- IBM Concert
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers obtain detailed server information that enables targeted follow-up attacks, potentially leading to full system compromise through chained vulnerabilities.
Likely Case
Information disclosure provides reconnaissance data that reduces attacker effort for subsequent attacks, increasing overall security risk.
If Mitigated
Limited information exposure with no direct system access, though still provides some reconnaissance value to attackers.
🎯 Exploit Status
Exploitation requires only HTTP requests to the server; no authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.1 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/7252019
Restart Required: Yes
Instructions:
1. Download IBM Concert version 2.0.1 or later from IBM support. 2. Backup current installation. 3. Apply the update following IBM's installation guide. 4. Restart the IBM Concert service.
🔧 Temporary Workarounds
HTTP Header Filtering via Reverse Proxy
allConfigure reverse proxy (Apache/Nginx) to strip sensitive headers from IBM Concert responses
# Apache: Header unset Server
# Nginx: proxy_hide_header Server;
🧯 If You Can't Patch
- Place IBM Concert behind a properly configured reverse proxy that filters sensitive headers
- Restrict network access to IBM Concert to trusted IP ranges only
🔍 How to Verify
Check if Vulnerable:
Send HTTP request to IBM Concert and examine response headers for server information disclosureCheck Version:
Check IBM Concert admin interface or consult installation documentation for version informationVerify Fix Applied:
After patching, verify HTTP responses no longer contain sensitive server information in headers📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP request patterns targeting server information
- Multiple requests from single sources examining headers
Network Indicators:
- HTTP requests with unusual user-agents or patterns
- Traffic analyzing server response headers
SIEM Query:
source="web_server" AND (http_user_agent="*scanner*" OR http_user_agent="*recon*")