CVE-2025-59849
📋 TL;DR
This vulnerability in HCL BigFix Remote Control Lite Web Portal allows attackers to bypass Content Security Policy restrictions and execute malicious JavaScript code in web pages. It affects organizations using HCL BigFix Remote Control Lite Web Portal version 10.1.0.0326 and earlier. The vulnerability could lead to client-side attacks against users accessing the web portal.
💻 Affected Systems
- HCL BigFix Remote Control Lite Web Portal
📦 What is this software?
Hcl Launch by Hcltechsw
⚠️ Risk & Real-World Impact
Worst Case
Attackers could execute arbitrary JavaScript in users' browsers, potentially leading to session hijacking, credential theft, or redirection to malicious sites.
Likely Case
Cross-site scripting (XSS) attacks that steal session cookies or perform actions on behalf of authenticated users.
If Mitigated
Limited impact if CSP is properly configured elsewhere or if additional web application firewalls are in place.
🎯 Exploit Status
Exploitation requires the attacker to be able to inject malicious content into web pages, typically requiring some level of access or user interaction.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.1.0.0327 or later
Vendor Advisory: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0127332
Restart Required: Yes
Instructions:
1. Download the latest version from HCL support portal. 2. Backup current installation. 3. Install the updated version following HCL's upgrade documentation. 4. Restart the web portal service.
🔧 Temporary Workarounds
Implement additional CSP headers
allAdd stricter Content Security Policy headers at the web server level to mitigate the vulnerability.
Add 'Content-Security-Policy' header with appropriate directives in web server configuration
Restrict network access
allLimit access to the web portal to trusted networks only.
Configure firewall rules to restrict access to specific IP ranges
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with XSS protection rules
- Monitor for suspicious JavaScript execution in user sessions
🔍 How to Verify
Check if Vulnerable:
Check the installed version of HCL BigFix Remote Control Lite Web Portal. If version is 10.1.0.0326 or lower, the system is vulnerable.Check Version:
Check the version in the web portal interface or consult installation documentation for version verification.Verify Fix Applied:
Verify the installed version is 10.1.0.0327 or higher after applying the patch.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript execution patterns
- Multiple failed CSP violation reports
- Suspicious user agent strings
Network Indicators:
- Unexpected external script loads
- Suspicious outbound connections from user browsers
SIEM Query:
web_application_logs WHERE event_type = 'csp_violation' AND count > threshold