CVE-2024-55227
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in Dolibarr's Events/Agenda module that allows attackers to inject malicious scripts into the Title parameter. When exploited, this enables execution of arbitrary web scripts or HTML in victims' browsers. Organizations running vulnerable Dolibarr versions are affected.
💻 Affected Systems
- Dolibarr ERP/CRM
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware on client systems.
Likely Case
Session hijacking, credential theft, defacement of the application interface, or unauthorized actions within the Dolibarr system.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Exploitation requires user interaction (viewing crafted content) but payload delivery is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commits after v21.0.0-beta
Vendor Advisory: https://github.com/Dolibarr/dolibarr/security/policy
Restart Required: No
Instructions:
1. Update to latest Dolibarr version 2. Apply commits: 56710ce9b79a97df093f586c90bdaf6cce6a5808, 9aa24d9d9aeab36358c725dae3fe20c9631082e7, c0250e4c9106b5c889e512a4771f0205d4f99b99 3. Verify input validation in Events/Agenda module
🔧 Temporary Workarounds
Input Sanitization
allImplement server-side validation and HTML encoding for Title parameter in Events/Agenda module
Modify PHP code to use htmlspecialchars() or similar encoding functions
Content Security Policy
allImplement CSP headers to restrict script execution
Add header: Content-Security-Policy: script-src 'self'
🧯 If You Can't Patch
- Disable or restrict access to Events/Agenda module
- Implement web application firewall (WAF) rules to block XSS payloads in Title parameter
🔍 How to Verify
Check if Vulnerable:
Test by injecting basic XSS payload into Events/Agenda Title field and check if script executesCheck Version:
Check Dolibarr version in admin panel or via git logVerify Fix Applied:
Attempt same XSS payload after patch - script should be properly encoded and not execute📡 Detection & Monitoring
Log Indicators:
- Unusual characters/symbols in Title parameter logs
- Multiple failed XSS attempts
Network Indicators:
- HTTP requests with script tags in Title parameter
- Unusual outbound connections from Dolibarr server
SIEM Query:
web.url:*title=*<script* OR web.url:*title=*javascript:*🔗 References
- https://gist.github.com/Dqtdqt/9762466cd6ec541ea265ba33b09489ff
- https://github.com/Dolibarr/dolibarr/commit/56710ce9b79a97df093f586c90bdaf6cce6a5808
- https://github.com/Dolibarr/dolibarr/commit/9aa24d9d9aeab36358c725dae3fe20c9631082e7
- https://github.com/Dolibarr/dolibarr/commit/c0250e4c9106b5c889e512a4771f0205d4f99b99
- https://github.com/Dolibarr/dolibarr/security/policy
