CVE-2025-1618

4.3 MEDIUM

📋 TL;DR

This vulnerability in vTiger CRM allows attackers to inject malicious scripts via the _operation parameter in the Mobile module, leading to cross-site scripting (XSS). It affects vTiger CRM versions 6.4.0 and 6.5.0, potentially compromising user sessions and data integrity. The attack can be executed remotely without authentication.

💻 Affected Systems

Products:
  • vTiger CRM
Versions: 6.4.0, 6.5.0
Operating Systems: All platforms running vTiger CRM
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects installations with the Mobile module enabled and accessible.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users, potentially leading to full account compromise and data theft.

🟠

Likely Case

Attackers inject malicious scripts that execute in users' browsers, potentially stealing session tokens or displaying phishing content to users accessing the vulnerable Mobile module.

🟢

If Mitigated

With proper input validation and output encoding, the XSS payload would be neutralized, preventing script execution while maintaining functionality.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploit details have been publicly disclosed, making weaponization likely. Attack requires user interaction to trigger the XSS payload.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 7.0

Vendor Advisory: https://www.vtiger.com/

Restart Required: No

Instructions:

1. Backup your vTiger CRM database and files. 2. Download vTiger CRM 7.0 from the official website. 3. Follow the vTiger upgrade documentation to migrate from version 6.4.0/6.5.0 to 7.0. 4. Test functionality after upgrade.

🔧 Temporary Workarounds

Disable Mobile Module

linux

Temporarily disable the vulnerable Mobile module to prevent exploitation.

mv /path/to/vtiger/modules/Mobile /path/to/vtiger/modules/Mobile.disabled

Web Application Firewall Rule

all

Add WAF rule to block requests containing XSS patterns in the _operation parameter.

🧯 If You Can't Patch

  • Implement strict Content Security Policy (CSP) headers to mitigate XSS impact
  • Deploy web application firewall with XSS protection rules

🔍 How to Verify

Check if Vulnerable:

Check if your vTiger installation is version 6.4.0 or 6.5.0 and has /modules/Mobile/index.php accessible.

Check Version:

grep 'vtiger_version' /path/to/vtiger/config.inc.php

Verify Fix Applied:

Verify version is 7.0 or higher and test that XSS payloads in the _operation parameter are properly sanitized.

📡 Detection & Monitoring

Log Indicators:

  • HTTP requests to /modules/Mobile/index.php with suspicious _operation parameter values containing script tags or JavaScript

Network Indicators:

  • Unusual traffic patterns to the Mobile module endpoint

SIEM Query:

source="web_access_logs" AND uri="/modules/Mobile/index.php" AND (query="*_operation=*<script*" OR query="*_operation=*javascript:*")

🔗 References

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