CVE-2023-47626
📋 TL;DR
This Cross-Site Scripting (XSS) vulnerability in iTop allows attackers to inject malicious scripts into the user's personal tokens display/edit interface. When exploited, it can lead to session hijacking, credential theft, or unauthorized actions. All iTop users with personal tokens functionality are affected.
💻 Affected Systems
- iTop
📦 What is this software?
Itop by Combodo
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, take over administrative accounts, and gain full control of the iTop instance, potentially compromising the entire IT service management infrastructure.
Likely Case
Attackers steal user session cookies or credentials, leading to unauthorized access to sensitive IT service management data and potential privilege escalation.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized, preventing any successful exploitation.
🎯 Exploit Status
Exploitation requires the attacker to have access to inject malicious scripts into the personal tokens interface, typically requiring some level of user interaction or access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.1
Vendor Advisory: https://github.com/Combodo/iTop/security/advisories/GHSA-vv3v-9vrv-h95h
Restart Required: Yes
Instructions:
1. Backup your iTop instance and database. 2. Download iTop version 3.1.1 from the official repository. 3. Follow the iTop upgrade documentation to apply the update. 4. Restart the web server service. 5. Verify the update was successful.
🔧 Temporary Workarounds
Disable Personal Tokens
allTemporarily disable the personal tokens functionality to prevent exploitation while planning the upgrade.
Modify iTop configuration to disable personal tokens feature (specific configuration depends on deployment)
Implement WAF Rules
allConfigure Web Application Firewall rules to block XSS payloads targeting the personal tokens endpoints.
Add WAF rules to detect and block script injection patterns in /pages/UI.php?operation=... endpoints
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to prevent script execution from unauthorized sources.
- Enable input validation and output encoding at the application layer for all user-controlled data in personal tokens interface.
🔍 How to Verify
Check if Vulnerable:
Check if your iTop version is below 3.1.1 by examining the version in the admin interface or configuration files.Check Version:
Check the iTop configuration file or admin dashboard for version informationVerify Fix Applied:
After upgrading to 3.1.1, verify the version in the admin interface and test that script injection attempts in personal tokens interface are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to personal tokens endpoints with script tags or JavaScript code
- Multiple failed login attempts following suspicious token-related activities
Network Indicators:
- HTTP requests containing script injection patterns to /pages/UI.php endpoints
- Unexpected redirects or cookie theft patterns
SIEM Query:
source="iTop_logs" AND (uri="/pages/UI.php" AND (body CONTAINS "<script>" OR body CONTAINS "javascript:"))