CVE-2023-1704
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in Pimcore allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. It affects all Pimcore installations prior to version 10.5.20. Users who access compromised pages could have their sessions hijacked or sensitive information stolen.
💻 Affected Systems
- Pimcore
📦 What is this software?
Pimcore by Pimcore
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, perform actions as authenticated users, deface websites, or redirect users to malicious sites.
Likely Case
Session hijacking, cookie theft, and unauthorized actions within the Pimcore interface.
If Mitigated
Limited impact with proper content security policies and input validation, though stored XSS remains dangerous.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited. The commit shows specific input fields were not properly sanitized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.5.20
Vendor Advisory: https://github.com/pimcore/pimcore/commit/295f5e8d108b68198e36399bea0f69598eb108a0
Restart Required: No
Instructions:
1. Update Pimcore to version 10.5.20 or later. 2. Use composer update pimcore/pimcore. 3. Clear application cache if needed.
🔧 Temporary Workarounds
Input Sanitization
allImplement additional input validation and output encoding for user-controllable fields.
Content Security Policy
allImplement strict CSP headers to mitigate XSS impact.
🧯 If You Can't Patch
- Implement web application firewall rules to block XSS payloads
- Restrict access to Pimcore admin interface to trusted networks only
🔍 How to Verify
Check if Vulnerable:
Check Pimcore version in admin dashboard or via composer show pimcore/pimcoreCheck Version:
composer show pimcore/pimcore | grep versionsVerify Fix Applied:
Confirm version is 10.5.20 or later and test input fields for proper sanitization📡 Detection & Monitoring
Log Indicators:
- Unusual input patterns in form submissions
- JavaScript payloads in request logs
Network Indicators:
- Unexpected script tags in HTTP responses
- Suspicious outbound connections from user browsers
SIEM Query:
web_requests WHERE url CONTAINS 'pimcore' AND (request_body CONTAINS '<script>' OR request_body CONTAINS 'javascript:')