CVE-2020-19625
📋 TL;DR
This CVE describes a remote code execution vulnerability in oria gridx 1.3's test file tests/support/stores/test_grid_filter.php. Attackers can execute arbitrary code by sending crafted input to the $query parameter. This affects any system running the vulnerable gridx version with the test file accessible.
💻 Affected Systems
- oria gridx
📦 What is this software?
Gridx by Gridx Project
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands, install malware, exfiltrate data, or pivot to other systems.
Likely Case
Remote code execution leading to data theft, system disruption, or installation of backdoors.
If Mitigated
Limited impact if proper network segmentation, WAF rules, and access controls prevent exploitation.
🎯 Exploit Status
The vulnerability is in a test file with publicly available details, making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://github.com/oria/gridx/issues/433
Restart Required: No
Instructions:
1. Remove or restrict access to tests/support/stores/test_grid_filter.php
2. Consider removing all test files from production deployments
3. Monitor GitHub repository for official fixes
🔧 Temporary Workarounds
Remove vulnerable test file
linuxDelete or move the vulnerable test file from production systems
rm -f /path/to/gridx/tests/support/stores/test_grid_filter.php
Restrict file access
allConfigure web server to block access to test directories
# Apache: Add to .htaccess
<Files "test_grid_filter.php">
Order allow,deny
Deny from all
</Files>
# Nginx: Add to server block
location ~ /tests/ {
deny all;
}
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected systems
- Deploy web application firewall with rules to block exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check if file exists: find /path/to/gridx -name "test_grid_filter.php" -type fCheck Version:
Check gridx version in package.json or documentation filesVerify Fix Applied:
Verify file is removed or inaccessible: curl -I http://target/tests/support/stores/test_grid_filter.php should return 404 or 403📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /tests/support/stores/test_grid_filter.php
- Unusual POST parameters containing shell commands
- System command execution from web process
Network Indicators:
- HTTP traffic to test_grid_filter.php with suspicious $query parameters
- Outbound connections from web server to unexpected destinations
SIEM Query:
source="web_logs" AND uri="/tests/support/stores/test_grid_filter.php" AND (method="POST" OR method="GET")