CVE-2025-43779
📋 TL;DR
A reflected cross-site scripting vulnerability in Liferay Portal and DXP allows authenticated attackers to inject malicious JavaScript via a specific parameter. This code executes in victims' browsers, potentially stealing session cookies or performing actions on their behalf. Affected users include all authenticated users of vulnerable Liferay instances.
💻 Affected Systems
- Liferay Portal
- Liferay DXP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, gain administrative access, exfiltrate sensitive data, or perform account takeovers across the organization.
Likely Case
Attackers craft phishing links to steal session cookies from authenticated users, leading to unauthorized access to their accounts and potential data exposure.
If Mitigated
With proper input validation and output encoding, the malicious payload would be neutralized, preventing script execution.
🎯 Exploit Status
Exploitation requires authenticated access and social engineering to trick users into clicking malicious links.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Liferay Portal 7.4.3.113+; Liferay DXP 2024.Q1.19+ or update 93+
Vendor Advisory: https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43779
Restart Required: No
Instructions:
1. Download the appropriate patch from Liferay's customer portal. 2. Apply the patch following Liferay's patch installation procedures. 3. Verify the fix by testing the vulnerable parameter.
🔧 Temporary Workarounds
Input Validation Filter
allImplement a servlet filter to sanitize the productTypeName parameter before processing.
Implement custom filter in Liferay's web.xml or via hook/OSGi module
Content Security Policy
allImplement strict CSP headers to prevent script execution from untrusted sources.
Add 'Content-Security-Policy: script-src 'self'' to web server configuration
🧯 If You Can't Patch
- Implement WAF rules to block requests containing JavaScript in the productTypeName parameter
- Disable or restrict access to the CPDefinitionsPortlet if not required for business operations
🔍 How to Verify
Check if Vulnerable:
Test by accessing the vulnerable portlet with a payload like: /group/control_panel/manage?p_p_id=com_liferay_commerce_product_definitions_web_internal_portlet_CPDefinitionsPortlet&_com_liferay_commerce_product_definitions_web_internal_portlet_CPDefinitionsPortlet_productTypeName=<script>alert('test')</script>Check Version:
Check Liferay version via Control Panel → Server Administration → System Information or via portal-ext.propertiesVerify Fix Applied:
After patching, repeat the test above. The script should not execute and the payload should be properly encoded in the output.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing script tags or JavaScript in productTypeName parameter
- Unusual parameter values in CPDefinitionsPortlet requests
Network Indicators:
- HTTP requests with encoded JavaScript in URL parameters
- Suspicious redirects from Liferay URLs
SIEM Query:
source="liferay.log" AND ("productTypeName" AND ("<script" OR "javascript:" OR "onerror=" OR "onload="))