CVE-2018-25186
📋 TL;DR
CVE-2018-25186 is a CSRF vulnerability in Tina4 Stack 1.0.3 that allows attackers to modify administrator credentials without authentication. By tricking an authenticated admin into visiting a malicious webpage, attackers can submit forged POST requests to change passwords and email addresses. This affects all Tina4 Stack 1.0.3 installations with admin interfaces exposed.
💻 Affected Systems
- Tina4 Stack
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of administrative accounts leading to full system takeover, data exfiltration, or ransomware deployment.
Likely Case
Unauthorized credential changes allowing attacker persistence, privilege escalation, or lateral movement within the system.
If Mitigated
Limited impact with proper CSRF protections, though some reconnaissance or information disclosure may still occur.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated admin into visiting malicious page. Public exploit code exists in Exploit-DB.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.4 or later
Vendor Advisory: https://github.com/andrevandal/tina4stack/security/advisories
Restart Required: Yes
Instructions:
1. Backup current installation. 2. Update Tina4 Stack to version 1.0.4 or later via package manager or manual download. 3. Restart the Tina4 Stack service. 4. Verify CSRF tokens are now required for profile updates.
🔧 Temporary Workarounds
Implement CSRF Protection Middleware
allAdd CSRF token validation to all POST endpoints, especially /kim/profile
Add CSRF middleware in Tina4 configuration: $tina4->addMiddleware(new \Tina4\CSRF());
Restrict Admin Interface Access
allLimit access to admin endpoints to trusted IP addresses only
Add IP restriction in .htaccess or web server config for /kim/* paths
🧯 If You Can't Patch
- Implement network segmentation to isolate Tina4 Stack from internet exposure
- Deploy WAF with CSRF protection rules and monitor for suspicious POST requests to /kim/profile
🔍 How to Verify
Check if Vulnerable:
Check if Tina4 Stack version is 1.0.3 and test if POST requests to /kim/profile succeed without CSRF tokensCheck Version:
Check Tina4 configuration file or run: php -r "include 'vendor/autoload.php'; echo \Tina4\Tina4Php::VERSION;"Verify Fix Applied:
Verify version is 1.0.4+ and test that POST requests to /kim/profile fail without valid CSRF tokens📡 Detection & Monitoring
Log Indicators:
- Multiple failed POST requests to /kim/profile
- Successful profile updates from unusual IP addresses
- Admin credential changes without corresponding login events
Network Indicators:
- POST requests to /kim/profile without Referer headers or CSRF tokens
- Traffic patterns showing admin sessions followed by profile modification requests
SIEM Query:
source="web_logs" AND (url_path="/kim/profile" AND http_method="POST") AND NOT csrf_token=*