CVE-2024-44777
📋 TL;DR
A reflected cross-site scripting vulnerability in vTiger CRM 7.4.0 allows attackers to inject malicious scripts via the tag parameter. When exploited, this enables arbitrary code execution in users' browsers, potentially compromising their sessions and data. All organizations running the affected vTiger CRM version are vulnerable.
💻 Affected Systems
- vTiger CRM
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator credentials, hijack user sessions, perform actions as authenticated users, and potentially pivot to internal network systems.
Likely Case
Session hijacking, credential theft, defacement of CRM interface, and data exfiltration from user browsers.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy headers in place.
🎯 Exploit Status
Exploitation requires crafting a malicious URL with XSS payload in tag parameter and tricking users to click it.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: http://vtiger.com
Restart Required: No
Instructions:
1. Check vendor website for security updates. 2. Upgrade to patched version when available. 3. Apply input validation and output encoding to tag parameter.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to sanitize tag parameter input
Implement regex validation: /^[a-zA-Z0-9_-]+$/ for tag parameter
Content Security Policy
allImplement CSP headers to restrict script execution
Add header: Content-Security-Policy: script-src 'self'
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block XSS payloads in tag parameter
- Disable or restrict access to vulnerable index page if not required
🔍 How to Verify
Check if Vulnerable:
Test by injecting <script>alert('XSS')</script> into tag parameter of index page URLCheck Version:
Check CRM version in admin panel or configuration filesVerify Fix Applied:
Verify script payloads no longer execute when injected into tag parameter📡 Detection & Monitoring
Log Indicators:
- Unusual tag parameter values containing script tags or JavaScript code
- Multiple failed login attempts after XSS payload access
Network Indicators:
- HTTP requests with suspicious tag parameter values
- Outbound connections to unknown domains after XSS execution
SIEM Query:
source="web_logs" AND (tag="*<script>*" OR tag="*javascript:*")