CVE-2024-44647
📋 TL;DR
PHPGurukul Small CRM 3.0 contains a stored cross-site scripting vulnerability in the ticket management system. Attackers can inject malicious scripts via the 'aremark' parameter in manage-tickets.php, which executes when other users view tickets. This affects all organizations using Small CRM 3.0 for customer relationship management.
💻 Affected Systems
- PHPGurukul Small CRM
📦 What is this software?
Small Crm by Phpgurukul
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator or user session cookies, hijack accounts, deface the application, or redirect users to malicious sites, potentially leading to complete system compromise.
Likely Case
Attackers inject malicious scripts that steal session tokens or credentials when legitimate users view tickets, leading to account takeover and unauthorized access to CRM data.
If Mitigated
With proper input validation and output encoding, the impact is limited to minor data integrity issues with no code execution.
🎯 Exploit Status
Exploitation requires authenticated access to create or modify tickets. The vulnerability is well-documented with proof-of-concept available in public repositories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Download the latest version from phpgurukul.com if available
2. Backup your current installation
3. Replace the vulnerable manage-tickets.php file
4. Implement input validation and output encoding for all user inputs
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd server-side validation to sanitize the aremark parameter before processing
// PHP code to sanitize input:
$aremark = htmlspecialchars($_POST['aremark'], ENT_QUOTES, 'UTF-8');
Content Security Policy
allImplement CSP headers to restrict script execution
// Add to .htaccess or PHP header:
Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
// PHP implementation:
header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with XSS protection rules
- Disable or restrict access to the ticket management functionality for non-essential users
🔍 How to Verify
Check if Vulnerable:
Test by submitting a ticket with payload: <script>alert('XSS')</script> in the aremark field and check if it executes when viewing the ticketCheck Version:
Check the application's version in the admin panel or review the source code for version indicatorsVerify Fix Applied:
Attempt the same XSS payload and verify it's properly sanitized (shows as text rather than executing)📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to manage-tickets.php with script tags in parameters
- Multiple ticket submissions with similar malicious content
Network Indicators:
- HTTP requests containing <script> tags in POST data to manage-tickets.php
SIEM Query:
source="web_logs" AND uri="/manage-tickets.php" AND (POST_data CONTAINS "<script>" OR POST_data CONTAINS "javascript:")