CVE-2024-45676
📋 TL;DR
This vulnerability in IBM Cognos Controller allows authenticated users to upload insecure files due to insufficient file type validation. Attackers could potentially upload malicious files that might lead to further compromise. Organizations using IBM Cognos Controller 11.0.0 or 11.0.1 are affected.
💻 Affected Systems
- IBM Cognos Controller
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker uploads a malicious file that leads to remote code execution, data exfiltration, or complete system compromise.
Likely Case
An authenticated user uploads files that bypass intended restrictions, potentially leading to data manipulation or unauthorized file storage.
If Mitigated
With proper file validation controls, the impact is limited to attempted uploads being rejected or logged.
🎯 Exploit Status
Exploitation requires authenticated access and knowledge of file upload functionality
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fix as per IBM Security Bulletin
Vendor Advisory: https://www.ibm.com/support/pages/node/7177220
Restart Required: Yes
Instructions:
1. Review IBM Security Bulletin
2. Download and apply the appropriate fix from IBM Fix Central
3. Restart IBM Cognos Controller services
4. Verify the fix is applied
🔧 Temporary Workarounds
Implement file upload restrictions
allConfigure application or web server to restrict file uploads to specific file types
Network segmentation
allRestrict access to file upload functionality to authorized users only
🧯 If You Can't Patch
- Implement strict file upload validation at the application level
- Monitor file upload activities and audit logs for suspicious behavior
🔍 How to Verify
Check if Vulnerable:
Check IBM Cognos Controller version via administrative console or configuration filesCheck Version:
Check version in IBM Cognos Controller administrative interface or configuration filesVerify Fix Applied:
Verify the applied fix version matches IBM's security bulletin recommendations📡 Detection & Monitoring
Log Indicators:
- Unusual file upload activities
- Failed file upload attempts with unusual file types
- File uploads bypassing normal validation
Network Indicators:
- HTTP POST requests to file upload endpoints with unusual content types
SIEM Query:
source="cognos_controller" AND (event="file_upload" OR url_path="*upload*") AND file_type NOT IN ("allowed_types")