CVE-2025-27906
📋 TL;DR
IBM Content Navigator versions 3.0.11 through 3.2.0 expose directory listings when accessing specific application URLs, allowing attackers to view file and folder names. While file contents cannot be read or modified, this information disclosure could aid reconnaissance for further attacks. Organizations running affected IBM Content Navigator versions are vulnerable.
💻 Affected Systems
- IBM Content Navigator
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers map the application structure, identify sensitive files or backup locations, and use this information to plan targeted attacks like path traversal or brute force attempts.
Likely Case
Unauthorized users discover internal file paths, configuration files, backup directories, or temporary files, potentially revealing system architecture details.
If Mitigated
With proper access controls and network segmentation, impact is limited to information disclosure about directory structure without data exposure.
🎯 Exploit Status
Exploitation requires accessing specific URLs but no authentication bypass needed. Directory listing exposure occurs through normal application URLs.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply interim fix or upgrade as per IBM advisory
Vendor Advisory: https://www.ibm.com/support/pages/node/7247854
Restart Required: No
Instructions:
1. Review IBM advisory at provided URL. 2. Apply recommended interim fix or upgrade to patched version. 3. Test application functionality after applying fix.
🔧 Temporary Workarounds
Restrict Directory Listing
allConfigure web server to disable directory browsing/indexing for IBM Content Navigator directories
For Apache: Options -Indexes in .htaccess or httpd.conf
For IIS: Disable Directory Browsing in IIS Manager
Access Control Restrictions
allImplement strict access controls to limit who can access IBM Content Navigator URLs
Configure firewall rules to restrict access
Implement IP whitelisting for administrative interfaces
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block directory listing requests
- Restrict network access to IBM Content Navigator to trusted IPs only
🔍 How to Verify
Check if Vulnerable:
Access IBM Content Navigator application URLs and check if directory listings are exposed in browserCheck Version:
Check IBM Content Navigator version in administration console or application propertiesVerify Fix Applied:
After applying fix, attempt to access same URLs and verify directory listings are no longer exposed📡 Detection & Monitoring
Log Indicators:
- Multiple 200 OK responses to directory-like URLs
- Unusual access patterns to application paths
Network Indicators:
- HTTP requests to application URLs returning directory listings
SIEM Query:
web.url CONTAINS 'navigator' AND http.status = 200 AND (web.url ENDS WITH '/' OR web.url CONTAINS 'directory')