CVE-2025-43824
📋 TL;DR
This vulnerability allows authenticated users to manipulate file extensions when downloading vCard files from the Profile widget in Liferay. Attackers could potentially deliver malicious files disguised as legitimate vCards. Affected systems include Liferay Portal 7.4.0-7.4.3.111 and Liferay DXP 2023.Q4.0-2023.Q4.5, 2023.Q3.1-2023.Q3.8, and 7.4 GA through update 92.
💻 Affected Systems
- Liferay Portal
- Liferay DXP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could deliver executable malware disguised as a vCard file, potentially leading to system compromise if users execute the malicious file.
Likely Case
Attackers could deliver phishing payloads or other malicious files with misleading extensions, increasing the success rate of social engineering attacks.
If Mitigated
With proper user training and endpoint protection, the impact is limited to potential confusion about file types.
🎯 Exploit Status
Exploitation requires authenticated access and user interaction (downloading/executing the file).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Liferay Portal 7.4.3.112+, Liferay DXP 2023.Q4.6+, 2023.Q3.9+, 7.4 update 93+
Vendor Advisory: https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43824
Restart Required: Yes
Instructions:
1. Download the appropriate fix pack from Liferay's customer portal. 2. Apply the fix pack following Liferay's update procedures. 3. Restart the Liferay instance.
🔧 Temporary Workarounds
Disable Profile widget vCard download
allRemove or disable the Profile widget functionality that allows vCard downloads
Navigate to Control Panel > Widgets > Profile widget configuration
Disable vCard download option if available
🧯 If You Can't Patch
- Implement web application firewall rules to block malicious Content-Disposition header manipulation
- Educate users about the risks of downloading files from the Profile widget and verify file extensions before opening
🔍 How to Verify
Check if Vulnerable:
Check Liferay version against affected ranges. Test by downloading a vCard from Profile widget and inspecting Content-Disposition header.Check Version:
Check Liferay build number in Control Panel > Server Administration > PropertiesVerify Fix Applied:
After patching, verify the Content-Disposition header no longer contains user-controlled file extension parameters.📡 Detection & Monitoring
Log Indicators:
- Unusual vCard download patterns
- Multiple failed download attempts with manipulated parameters
Network Indicators:
- HTTP requests with manipulated Content-Disposition headers
- Unusual file downloads from Profile widget endpoints
SIEM Query:
web_server_logs WHERE uri CONTAINS '/profile/vcard/download' AND (user_agent IS suspicious OR parameters CONTAINS 'extension')