CVE-2024-30147
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in HCL Leap that allows attackers to inject malicious scripts into both the authoring environment and deployed applications. The vulnerability affects organizations using HCL Leap for business process automation, potentially compromising user sessions and data integrity.
💻 Affected Systems
- HCL Leap
📦 What is this software?
Hcl Leap by Hcltech
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, perform actions on behalf of authenticated users, or compromise sensitive data displayed in the application.
Likely Case
Attackers inject malicious scripts to steal user credentials or session tokens, potentially leading to account takeover and unauthorized access to business processes.
If Mitigated
With proper input validation and output encoding, the risk is reduced to minimal, though the vulnerability still exists in the codebase.
🎯 Exploit Status
XSS vulnerabilities typically have low exploitation complexity once the injection point is identified. Exploitation requires user interaction with malicious content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to vendor advisory for specific fixed versions
Vendor Advisory: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0119900
Restart Required: Yes
Instructions:
1. Review the HCL advisory for affected versions. 2. Apply the recommended patch or upgrade to a fixed version. 3. Restart the HCL Leap application services. 4. Test functionality after patching.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement strict input validation and proper output encoding for all user-supplied data
Content Security Policy
allImplement a strict Content Security Policy to mitigate XSS impact
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block XSS payloads
- Restrict access to HCL Leap applications to trusted networks only
🔍 How to Verify
Check if Vulnerable:
Check HCL Leap version against affected versions listed in the vendor advisoryCheck Version:
Check version through HCL Leap administration interface or consult system documentationVerify Fix Applied:
Verify the installed version matches or exceeds the fixed version specified in the advisory📡 Detection & Monitoring
Log Indicators:
- Unusual script tags or JavaScript in user input fields
- Multiple failed input validation attempts
Network Indicators:
- Requests containing suspicious script patterns or encoded payloads
SIEM Query:
web_requests WHERE (url CONTAINS "<script>" OR body CONTAINS "javascript:") AND dest_ip IN (hcl_leap_servers)