CVE-2022-44759
📋 TL;DR
This vulnerability in HCL Leap allows attackers to inject malicious scripts into SVG files, which then execute in users' browsers when viewing affected applications. It affects organizations using HCL Leap for application development and deployment. The attack requires user interaction with a malicious SVG file.
💻 Affected Systems
- HCL Leap
📦 What is this software?
Hcl Leap by Hcltech
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, or redirect users to malicious sites through cross-site scripting attacks.
Likely Case
Attackers create malicious SVG files that execute JavaScript in victims' browsers when viewed through HCL Leap applications, potentially stealing sensitive data.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
Exploitation requires the attacker to craft a malicious SVG file and trick a user into viewing it through the HCL Leap application.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HCL Leap 2022.4.0 and later
Vendor Advisory: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0119900
Restart Required: Yes
Instructions:
1. Download HCL Leap 2022.4.0 or later from HCL support portal. 2. Backup current installation and data. 3. Stop HCL Leap services. 4. Install the updated version. 5. Restart services and verify functionality.
🔧 Temporary Workarounds
Disable SVG file upload
allConfigure HCL Leap applications to reject SVG file uploads entirely
Configure application settings to block SVG MIME types and file extensions
Implement content security policy
allAdd Content-Security-Policy headers to restrict script execution
Add 'Content-Security-Policy: script-src 'self'' to HTTP headers
🧯 If You Can't Patch
- Implement strict input validation for all file uploads, especially SVG files
- Deploy web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check HCL Leap version via administration console or by examining installation filesCheck Version:
Check version in HCL Leap administration interface or installation directoryVerify Fix Applied:
Verify version is 2022.4.0 or later and test SVG file upload with script payloads📡 Detection & Monitoring
Log Indicators:
- Unusual SVG file uploads
- Large number of SVG processing errors
- Unexpected script execution in application logs
Network Indicators:
- HTTP requests containing SVG files with script tags
- Outbound connections from application to unexpected domains
SIEM Query:
source="hcl-leap" AND (file_extension="svg" OR mime_type="image/svg+xml") AND size>100KB