CVE-2019-19249
📋 TL;DR
CVE-2019-19249 is an improper input validation vulnerability in QueryTree's invitation handling that allows attackers to execute arbitrary code. This affects all QueryTree instances before version 3.0.99-beta that have the invitation feature enabled. Attackers can exploit this to gain full control of the application server.
💻 Affected Systems
- QueryTree
📦 What is this software?
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
Querytree by Querytreeapp
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data exfiltration, and lateral movement within the network.
Likely Case
Unauthorized access to the QueryTree database, privilege escalation, and potential data manipulation or theft.
If Mitigated
Limited impact with proper network segmentation and application firewalls blocking exploitation attempts.
🎯 Exploit Status
Based on CVSS 9.8 and CWE-20 (Improper Input Validation), exploitation is likely straightforward for skilled attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.0.99-beta and later
Vendor Advisory: https://github.com/d4software/QueryTree/commit/57b700823f8eb1a42eb3bc0c706fbe5e5f5e766f
Restart Required: Yes
Instructions:
1. Backup your QueryTree database and configuration. 2. Download QueryTree 3.0.99-beta or later from GitHub. 3. Replace existing installation with patched version. 4. Restart the QueryTree service. 5. Verify the patch is applied by checking the version.
🔧 Temporary Workarounds
Disable Invitation Feature
allTemporarily disable the invitation functionality to reduce attack surface.
Modify QueryTree configuration to disable user invitations
Network Access Control
linuxRestrict access to QueryTree to trusted IP addresses only.
iptables -A INPUT -p tcp --dport [QueryTree_port] -s [trusted_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [QueryTree_port] -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate QueryTree from critical systems
- Deploy a web application firewall (WAF) with rules to block suspicious invitation requests
🔍 How to Verify
Check if Vulnerable:
Check QueryTree version via web interface or configuration files. If version is below 3.0.99-beta, system is vulnerable.Check Version:
Check the version displayed in QueryTree web interface or examine package/installation metadataVerify Fix Applied:
After patching, verify version is 3.0.99-beta or higher and test invitation functionality works correctly.📡 Detection & Monitoring
Log Indicators:
- Unusual invitation creation requests
- Multiple failed invitation attempts
- Requests with malformed parameters to invitation endpoints
Network Indicators:
- HTTP POST requests to /invitations endpoint with suspicious payloads
- Unusual outbound connections from QueryTree server
SIEM Query:
source="QueryTree" AND (uri_path="/invitations" OR event="invitation_created") AND status=200🔗 References
- https://github.com/d4software/QueryTree/commit/57b700823f8eb1a42eb3bc0c706fbe5e5f5e766f
- https://github.com/d4software/QueryTree/compare/3.0.97-beta...3.0.99-beta
- https://github.com/d4software/QueryTree/commit/57b700823f8eb1a42eb3bc0c706fbe5e5f5e766f
- https://github.com/d4software/QueryTree/compare/3.0.97-beta...3.0.99-beta
