CVE-2025-8050
📋 TL;DR
This path traversal vulnerability in OpenText Flipper allows attackers to access arbitrary files on the server by manipulating file paths. It affects Flipper version 3.1.2 and could expose sensitive system files or application data.
💻 Affected Systems
- OpenText Flipper
📦 What is this software?
Flipper by Opentext
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise through access to sensitive configuration files, credentials, or system files leading to further exploitation.
Likely Case
Unauthorized access to application files, configuration data, or user data stored on the server.
If Mitigated
Limited file access restricted by proper input validation and file system permissions.
🎯 Exploit Status
Exploitation requires path traversal techniques but no authentication or special privileges.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.3 or later
Vendor Advisory: https://support.opentext.com/csm?id=ot_kb_unauthenticated&sysparm_article=KB0850526
Restart Required: No
Instructions:
1. Download Flipper 3.1.3 or later from OpenText support portal
2. Backup current installation
3. Install the updated version following vendor documentation
4. Verify the installation completes successfully
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation to reject file paths containing directory traversal sequences
Implement validation to reject paths containing '../', '..\\', or absolute paths
Web Application Firewall Rules
allConfigure WAF to block requests containing path traversal patterns
Add WAF rule to block requests with '../' or similar traversal patterns in URL parameters
🧯 If You Can't Patch
- Implement strict file system permissions to limit accessible directories
- Deploy network segmentation to restrict access to vulnerable systems
🔍 How to Verify
Check if Vulnerable:
Check if Flipper version is 3.1.2 by accessing the admin interface or checking installation filesCheck Version:
Check Flipper web interface or installation directory for version informationVerify Fix Applied:
Verify Flipper version is 3.1.3 or later and test path traversal attempts are blocked📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing '../' or similar traversal patterns in file parameters
- Unusual file access patterns from single IP addresses
Network Indicators:
- Multiple failed attempts to access non-existent files with traversal patterns
- Requests for sensitive file paths like /etc/passwd, /proc/self/environ
SIEM Query:
source="web_server" AND (url="*../*" OR url="*..\\*" OR url="*/etc/*" OR url="*/proc/*")