CVE-2025-51733
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in HCL Unica 12.0.0 allows attackers to trick authenticated users into performing unintended actions by submitting malicious requests. This affects administrators and users with access to the Unica web interface who could be manipulated to change configurations or perform unauthorized operations.
💻 Affected Systems
- HCL Unica
📦 What is this software?
Unica by Hcltech
⚠️ Risk & Real-World Impact
Worst Case
Administrator account compromise leading to complete system takeover, data exfiltration, or service disruption through configuration changes.
Likely Case
Unauthorized changes to user permissions, campaign configurations, or data exports by tricking authenticated users.
If Mitigated
Limited impact with proper CSRF protections, though some risk remains if users click malicious links.
🎯 Exploit Status
CSRF attacks are well-understood and easy to implement; proof-of-concept available in GitHub gist.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: Not available
Restart Required: No
Instructions:
Check HCL support portal for security updates; apply vendor-provided patches when available.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd anti-CSRF tokens to all state-changing forms and validate them server-side.
Custom implementation required - no standard commands
SameSite Cookie Attribute
allSet SameSite=Strict or Lax on session cookies to prevent cross-site requests.
Set-Cookie: sessionid=xxx; SameSite=Strict; Secure; HttpOnly
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block CSRF patterns
- Educate users about phishing risks and safe browsing practices
🔍 How to Verify
Check if Vulnerable:
Test forms for missing CSRF tokens using browser developer tools or automated scanners like OWASP ZAP.Check Version:
Check Unica administration interface or consult system documentation for version information.Verify Fix Applied:
Verify that all POST/PUT/DELETE requests require valid CSRF tokens and fail without them.📡 Detection & Monitoring
Log Indicators:
- Multiple failed state-changing requests from same user
- Unusual configuration changes without corresponding user actions
Network Indicators:
- Requests with missing or invalid Referer headers
- State-changing requests originating from unexpected domains
SIEM Query:
web_requests method=POST AND NOT referer CONTAINS 'yourdomain.com' AND response_code=200