CVE-2025-33084
📋 TL;DR
IBM Concert Software versions 1.0.0 through 1.1.0 fail to properly enable HTTP Strict Transport Security (HSTS), allowing attackers to intercept unencrypted HTTP traffic via man-in-the-middle attacks. This vulnerability affects all deployments of IBM Concert Software within the vulnerable version range that are accessible over networks.
💻 Affected Systems
- IBM Concert Software
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers intercept and steal sensitive data including authentication credentials, session tokens, and confidential business information transmitted over HTTP connections.
Likely Case
Attackers capture unencrypted traffic containing user credentials, session cookies, or other sensitive information when users access the application over insecure networks.
If Mitigated
With proper network segmentation and access controls, impact is limited to internal network traffic interception only.
🎯 Exploit Status
Exploitation requires network position to intercept traffic. No authentication bypass is needed as this targets transport security.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.1.1 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/7243699
Restart Required: No
Instructions:
1. Download IBM Concert Software version 1.1.1 or later from IBM support portal. 2. Follow IBM's upgrade documentation for your deployment type. 3. Verify HSTS headers are present in HTTP responses.
🔧 Temporary Workarounds
Configure Reverse Proxy with HSTS
allDeploy a reverse proxy (nginx, Apache, etc.) in front of IBM Concert that adds HSTS headers
# Apache example: Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"
# nginx example: add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
🧯 If You Can't Patch
- Enforce HTTPS-only access through network firewall rules and redirect all HTTP traffic to HTTPS
- Implement network segmentation to isolate IBM Concert systems from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Use curl or browser developer tools to check HTTP responses for missing 'Strict-Transport-Security' header: curl -I http://concert-server/Check Version:
Check IBM Concert administration interface or consult deployment documentation for version informationVerify Fix Applied:
Verify 'Strict-Transport-Security' header appears in HTTP responses with proper max-age value📡 Detection & Monitoring
Log Indicators:
- Multiple HTTP requests without subsequent HTTPS redirects
- Unusual traffic patterns suggesting MITM activity
Network Indicators:
- HTTP traffic to IBM Concert servers without HTTPS redirects
- Missing HSTS headers in HTTP responses
SIEM Query:
source="web_server_logs" AND (url_path CONTAINS "/concert/" OR host="concert-server") AND protocol="http" AND NOT (response_code=301 OR response_code=302)