CVE-2025-36223
📋 TL;DR
IBM OpenPages 9.0 and 9.1 is vulnerable to HTTP header injection due to improper validation of HOST headers. This allows attackers to inject malicious content into HTTP responses, potentially enabling cross-site scripting, cache poisoning, or session hijacking attacks. Organizations running these specific versions of IBM OpenPages are affected.
💻 Affected Systems
- IBM OpenPages
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could hijack user sessions, steal sensitive data, or redirect users to malicious sites through successful cross-site scripting or cache poisoning attacks.
Likely Case
Attackers could inject malicious scripts or content into web pages viewed by users, potentially stealing session cookies or credentials.
If Mitigated
With proper input validation and output encoding controls, the impact would be limited to minor information disclosure or denial of service.
🎯 Exploit Status
HTTP header injection typically requires minimal technical skill to exploit once the vulnerability is understood.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply the fix as described in IBM Security Bulletin
Vendor Advisory: https://www.ibm.com/support/pages/node/7250239
Restart Required: Yes
Instructions:
1. Review IBM Security Bulletin for specific patch details
2. Download and apply the appropriate fix from IBM Fix Central
3. Restart the OpenPages application server
4. Verify the fix is properly applied
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to block malicious HOST header injections
Reverse Proxy Filtering
allConfigure reverse proxy to validate and sanitize HOST headers before reaching OpenPages
🧯 If You Can't Patch
- Implement strict input validation at network perimeter devices
- Monitor for unusual HOST header patterns in web server logs
🔍 How to Verify
Check if Vulnerable:
Check OpenPages version via administrative interface or by examining installed packagesCheck Version:
Check OpenPages version in administrative console or via package managerVerify Fix Applied:
Verify patch installation through IBM Fix Central verification or version check📡 Detection & Monitoring
Log Indicators:
- Unusual HOST header patterns in web server logs
- Multiple failed injection attempts
Network Indicators:
- HTTP requests with malformed or unusually long HOST headers
- Requests containing script tags or special characters in HOST headers
SIEM Query:
Search for web logs containing suspicious HOST header patterns (e.g., containing <script>, javascript:, or unusual characters)