CVE-2025-15437
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in LigeroSmart's Environment Variable Handler component. Attackers can manipulate the REQUEST_URI argument to inject malicious scripts that execute in users' browsers. All LigeroSmart installations up to version 6.1.24 are affected.
💻 Affected Systems
- LigeroSmart
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, deface websites, or redirect users to malicious sites.
Likely Case
Attackers inject malicious scripts that steal user session data or perform unauthorized actions within the application context.
If Mitigated
With proper input validation and output encoding, the impact is limited to script execution within the current session scope.
🎯 Exploit Status
The exploit has been made public and manipulation of REQUEST_URI is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.1.26 or 6.3
Vendor Advisory: https://github.com/LigeroSmart/ligerosmart/releases/tag/6.1.26
Restart Required: Yes
Instructions:
1. Backup your LigeroSmart installation and database. 2. Download version 6.1.26 or 6.3 from the official repository. 3. Replace the existing installation with the patched version. 4. Restart the LigeroSmart service.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to sanitize REQUEST_URI input
# Add input validation in your web server configuration or application code
# Example for Apache: RewriteEngine On
# RewriteCond %{QUERY_STRING} (.*)REQUEST_URI(.*)
# RewriteRule ^(.*)$ - [F,L]
Content Security Policy
allImplement CSP headers to restrict script execution
# Add to web server configuration or application headers
# Example: Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Implement a Web Application Firewall (WAF) with XSS protection rules
- Disable or restrict access to the vulnerable component if possible
🔍 How to Verify
Check if Vulnerable:
Check your LigeroSmart version. If it's 6.1.24 or earlier, you are vulnerable.Check Version:
Check the version in LigeroSmart admin interface or configuration filesVerify Fix Applied:
After patching, test by attempting to inject script tags in REQUEST_URI parameters and verify they are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual REQUEST_URI patterns containing script tags or JavaScript code
- Multiple failed attempts with malformed URIs
Network Indicators:
- HTTP requests with suspicious REQUEST_URI parameters containing script elements
SIEM Query:
source="web_logs" AND (REQUEST_URI="*<script*" OR REQUEST_URI="*javascript:*")🔗 References
- https://github.com/LigeroSmart/ligerosmart/commit/264ac5b2be5b3c673ebd8cb862e673f5d300d9a7
- https://github.com/LigeroSmart/ligerosmart/issues/278
- https://github.com/LigeroSmart/ligerosmart/issues/278#issuecomment-3675129508
- https://github.com/LigeroSmart/ligerosmart/releases/tag/6.1.26
- https://vuldb.com/?ctiid.339364
- https://vuldb.com/?id.339364
- https://vuldb.com/?submit.729021
