CVE-2020-7851
📋 TL;DR
CVE-2020-7851 is an argument injection vulnerability in Innorix Web-Based File Transfer Solution that allows remote file download and execution via crafted web pages. Attackers can trick users into visiting malicious pages to infect systems with malware. This affects all Innorix Web-Based File Transfer Solution installations running versions up to and including 9.2.18.385.
💻 Affected Systems
- Innorix Web-Based File Transfer Solution
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through remote code execution, data theft, ransomware deployment, and lateral movement across the network.
Likely Case
Malware infection on user workstations, credential theft, and potential data exfiltration from the file transfer system.
If Mitigated
Limited impact with proper network segmentation, application whitelisting, and user awareness training preventing successful exploitation.
🎯 Exploit Status
Exploitation requires user interaction (visiting malicious page) but the technical complexity is low once user is tricked.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 9.2.18.385
Vendor Advisory: https://www.innorix.com/ko/
Restart Required: Yes
Instructions:
1. Download latest version from Innorix website. 2. Backup configuration and data. 3. Install update following vendor instructions. 4. Restart service/application. 5. Verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Innorix server from internet and restrict access to trusted networks only.
Web Application Firewall Rules
allImplement WAF rules to block suspicious argument patterns and file download requests.
🧯 If You Can't Patch
- Implement strict network access controls to limit who can access the Innorix web interface
- Deploy endpoint protection with behavioral analysis to detect and block malicious file execution
🔍 How to Verify
Check if Vulnerable:
Check Innorix administration panel or configuration files for version number. If version is 9.2.18.385 or earlier, system is vulnerable.Check Version:
Check web interface admin panel or consult Innorix documentation for version checking method.Verify Fix Applied:
Verify version number is greater than 9.2.18.385 and test file transfer functionality works normally.📡 Detection & Monitoring
Log Indicators:
- Unusual file download patterns
- Multiple failed authentication attempts followed by successful access
- Suspicious argument strings in web server logs
Network Indicators:
- Unusual outbound connections from Innorix server
- Large file transfers to unexpected destinations
- HTTP requests with abnormal parameter patterns
SIEM Query:
source="innorix_logs" AND (event="file_download" AND size>100MB) OR (url CONTAINS "malicious_pattern")