CVE-2020-13877
📋 TL;DR
This CVE describes SQL injection vulnerabilities in ResourceXpress Meeting Monitor 4.9 ASPX pages that allow attackers to execute arbitrary SQL commands. Successful exploitation could lead to remote code execution and sensitive data disclosure. Organizations using ResourceXpress Meeting Monitor 4.9 are affected.
💻 Affected Systems
- ResourceXpress Meeting Monitor
📦 What is this software?
Meeting Monitor by Resourcexpress
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise via remote code execution leading to data theft, lateral movement, and persistent backdoor installation
Likely Case
Database compromise with sensitive meeting data, user credentials, and organizational information disclosure
If Mitigated
Limited impact with proper input validation, WAF protection, and network segmentation
🎯 Exploit Status
SQL injection vulnerabilities are well-understood attack vectors with many available tools
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.8 HF 1,2,3 OnPrem v5.3 or later
Vendor Advisory: https://resourcexpress.atlassian.net/wiki/spaces/RSG/pages/807698439/v1.8+HF+1+2+3+OnPrem+v5.3
Restart Required: Yes
Instructions:
1. Download the latest patch from ResourceXpress vendor portal. 2. Backup current installation. 3. Apply the patch following vendor instructions. 4. Restart the application and IIS services. 5. Verify functionality.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy WAF with SQL injection rules to block malicious requests
Input Validation Filter
windowsImplement application-level input validation for all ASPX parameters
🧯 If You Can't Patch
- Isolate the Meeting Monitor system in a separate network segment with strict firewall rules
- Implement strong authentication and limit access to only authorized users
🔍 How to Verify
Check if Vulnerable:
Review application version in admin interface or check installed files for version 4.9Check Version:
Check application web interface or review installation directory version filesVerify Fix Applied:
Confirm version is updated to v1.8 HF 1,2,3 OnPrem v5.3 or later and test SQL injection attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in IIS logs
- Multiple failed login attempts with SQL syntax
- Long parameter values in URL requests
Network Indicators:
- HTTP requests containing SQL keywords (SELECT, UNION, INSERT, etc.)
- Unusual database connection patterns
SIEM Query:
source="IIS" AND ("sql" OR "union" OR "select" OR "insert" OR "delete") AND status=500