CVE-2025-27380
📋 TL;DR
This vulnerability allows authenticated attackers to inject malicious HTML content into Project Release functionality in Altium Enterprise Server. When victims view this content, arbitrary JavaScript executes in their browsers, potentially leading to session hijacking or data theft. All authenticated users of affected AES versions are at risk.
💻 Affected Systems
- Altium Enterprise Server (AES)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, data exfiltration, or lateral movement within the enterprise network via session hijacking and credential theft.
Likely Case
Session hijacking leading to unauthorized access to sensitive project data, intellectual property theft, or privilege escalation within the AES platform.
If Mitigated
Limited impact with proper input validation and output encoding, potentially only cosmetic page defacement.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once access is obtained. Attackers need to craft HTML with JavaScript payloads and trick victims into viewing them.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://www.altium.com/platform/security-compliance/security-advisories
Restart Required: Yes
Instructions:
1. Review the vendor security advisory
2. Download the latest patched version from Altium
3. Backup current configuration and data
4. Apply the update following Altium's deployment procedures
5. Restart the AES service
6. Verify the fix is applied
🔧 Temporary Workarounds
Input Validation Filtering
allImplement server-side input validation to sanitize HTML content in Project Release functionality
Content Security Policy
allImplement strict Content Security Policy headers to restrict JavaScript execution
🧯 If You Can't Patch
- Implement strict access controls and monitor authenticated user activity for suspicious HTML content submissions
- Deploy web application firewall rules to detect and block HTML injection patterns
🔍 How to Verify
Check if Vulnerable:
Check AES version in administration console or configuration files. If version is 7.0.3, system is vulnerable.Check Version:
Check AES web interface administration panel or consult server configuration files for version informationVerify Fix Applied:
Verify AES version has been updated to a version later than 7.0.3 as specified in vendor advisory.📡 Detection & Monitoring
Log Indicators:
- Unusual HTML content submissions to Project Release endpoints
- Multiple failed HTML validation attempts
- Suspicious user activity patterns around content submission
Network Indicators:
- HTTP requests containing script tags or JavaScript in Project Release parameters
- Unusual outbound connections following Project Release interactions
SIEM Query:
source="aes_logs" AND (message="*<script>*" OR message="*javascript:*") AND endpoint="*/project/release*"