CVE-2023-42233
📋 TL;DR
Pat Infinite Solutions HelpdeskAdvanced versions up to 11.0.33 contain a cross-site scripting vulnerability in the Filter/FilterEditor function. This allows attackers to inject malicious scripts that execute in victims' browsers when they view crafted filter content. Organizations using vulnerable versions of this helpdesk software are affected.
💻 Affected Systems
- Pat Infinite Solutions HelpdeskAdvanced
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, perform account takeover, redirect users to malicious sites, or deploy malware through the helpdesk interface.
Likely Case
Attackers craft malicious filter links that, when viewed by authenticated users, execute JavaScript to steal session tokens or perform actions on behalf of the victim.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution, preventing exploitation.
🎯 Exploit Status
XSS vulnerabilities typically require user interaction (viewing malicious content) but are straightforward to exploit once the attack vector is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 11.0.33
Vendor Advisory: https://gitlab.com/daniele_m/cve-list/-/blob/main/README.md
Restart Required: No
Instructions:
1. Upgrade HelpdeskAdvanced to version newer than 11.0.33. 2. Apply vendor-provided patches if available. 3. Verify the Filter/FilterEditor function properly sanitizes user input.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize filter parameters before processing.
Content Security Policy
allImplement strict Content Security Policy headers to mitigate XSS impact.
Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Restrict access to the Filter/FilterEditor function to trusted users only
- Implement web application firewall rules to detect and block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check HelpdeskAdvanced version in admin panel or configuration files. If version is 11.0.33 or lower, system is vulnerable.Check Version:
Check admin dashboard or configuration files for version informationVerify Fix Applied:
After patching, test the Filter/FilterEditor function with XSS payloads like <script>alert('test')</script> to ensure they are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual filter parameter values containing script tags or JavaScript code
- Multiple failed filter validation attempts
Network Indicators:
- HTTP requests to Filter/FilterEditor endpoint with suspicious parameters
- Outbound connections to unexpected domains following filter access
SIEM Query:
source="web_logs" AND (uri="*FilterEditor*" OR uri="*Filter*") AND (param="*<script>*" OR param="*javascript:*")