CVE-2023-1702
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in Pimcore, an open-source content management platform. Attackers can inject malicious scripts into web pages viewed by other users, potentially stealing session cookies or performing actions on behalf of victims. Organizations using Pimcore versions prior to 10.5.20 are affected.
💻 Affected Systems
- pimcore/pimcore
📦 What is this software?
Pimcore by Pimcore
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, gain full administrative access to the Pimcore instance, and potentially compromise the entire system or exfiltrate sensitive data.
Likely Case
Attackers could steal user session cookies, perform actions on behalf of authenticated users, deface websites, or redirect users to malicious sites.
If Mitigated
With proper input validation and output encoding, the impact is limited to potential UI disruption without data compromise.
🎯 Exploit Status
XSS vulnerabilities are commonly exploited and weaponization is likely given the popularity of Pimcore.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.5.20
Vendor Advisory: https://github.com/pimcore/pimcore/commit/2b997737dd6a60be2239a51dd6d9ef5881568e6d
Restart Required: No
Instructions:
1. Update Pimcore to version 10.5.20 or later using Composer: composer require pimcore/pimcore:^10.5.20
2. Clear the cache: bin/console cache:clear
3. Verify the update completed successfully.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize user inputs before processing.
Content Security Policy
allImplement a strict Content Security Policy header to mitigate XSS impact.
🧯 If You Can't Patch
- Implement a Web Application Firewall (WAF) with XSS protection rules
- Disable user input fields that could be vulnerable until patching is possible
🔍 How to Verify
Check if Vulnerable:
Check the Pimcore version in the admin dashboard or via composer show pimcore/pimcoreCheck Version:
composer show pimcore/pimcore | grep versionsVerify Fix Applied:
Verify the version is 10.5.20 or later and test previously vulnerable input fields for XSS payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests with script tags or JavaScript code in parameters
- Multiple failed login attempts followed by successful login from different IP
Network Indicators:
- HTTP requests containing <script> tags or JavaScript code in URL parameters or POST data
SIEM Query:
source="web_server_logs" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")