CVE-2025-43753
📋 TL;DR
A reflected cross-site scripting (XSS) vulnerability in Liferay Portal and DXP allows authenticated remote users to inject malicious JavaScript into embedded message fields. This could enable session hijacking, credential theft, or other client-side attacks against users who view the manipulated content. Affected users include anyone using vulnerable versions of Liferay Portal 7.4.3.32-7.4.3.132 or Liferay DXP 2025.Q1.0-2025.Q1.7, 2024.Q4.0-2024.Q4.7, 2024.Q3.1-2024.Q3.13, 2024.Q2.1-2024.Q2.13, 2024.Q1.1-2024.Q1.16, and 7.4 update 32-92.
💻 Affected Systems
- Liferay Portal
- Liferay DXP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could steal administrator session cookies, perform actions as authenticated users, redirect to phishing sites, or install malware on client systems.
Likely Case
Attackers could steal user session tokens, perform limited actions within the portal as the victim, or deface content.
If Mitigated
With proper input validation and output encoding, the impact is limited to unsuccessful injection attempts.
🎯 Exploit Status
Exploitation requires an authenticated attacker and a victim who views the manipulated content; social engineering may be needed to lure victims.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply Liferay Portal 7.4.3.133+ or Liferay DXP updates beyond affected versions (e.g., 2025.Q1.8+, 2024.Q4.8+, etc.)
Vendor Advisory: https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43753
Restart Required: No
Instructions:
1. Download the latest patch from Liferay's customer portal. 2. Apply the patch according to Liferay's update instructions. 3. Verify the fix by testing the embedded message field.
🔧 Temporary Workarounds
Implement Input Validation and Output Encoding
allAdd server-side validation to sanitize user input in embedded message fields and encode output to prevent script execution.
Enable Content Security Policy (CSP)
allConfigure CSP headers to restrict script execution from untrusted sources, mitigating XSS impact.
🧯 If You Can't Patch
- Restrict access to vulnerable forms to trusted users only.
- Monitor logs for suspicious input patterns in message fields.
🔍 How to Verify
Check if Vulnerable:
Check your Liferay version against affected ranges; test by attempting to inject script tags into embedded message fields.Check Version:
Check Liferay version via portal UI or server logs; command varies by deployment (e.g., check liferay.home/version.txt).Verify Fix Applied:
After patching, test the embedded message field with XSS payloads to ensure they are sanitized or blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual input patterns in form submissions, especially in message fields; JavaScript or HTML tags in logs.
Network Indicators:
- HTTP requests with script payloads in parameters; abnormal traffic to embedded message endpoints.
SIEM Query:
Example: search for 'script' or 'javascript' in form submission logs related to Liferay message fields.