CVE-2020-15394
9.8 CRITICAL
📋 TL;DR
This vulnerability allows unauthenticated attackers to execute SQL injection attacks via the REST API in Zoho ManageEngine Applications Manager, which can lead to remote code execution. It affects all systems running Applications Manager versions before build 14740. Organizations using vulnerable versions are at risk of complete system compromise.
💻 Affected Systems
Products:
- Zoho ManageEngine Applications Manager
Versions: All versions before build 14740
Operating Systems: All supported platforms
Default Config Vulnerable:
⚠️ Yes
Notes: Default installations are vulnerable. The REST API endpoint is typically enabled by default.
📦 What is this software?
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
Manageengine Applications Manager by Zohocorp
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with administrative privileges, data theft, lateral movement within the network, and persistent backdoor installation.
Likely Case
Database compromise, sensitive information exfiltration, and potential ransomware deployment.
If Mitigated
Limited impact with proper network segmentation, WAF protection, and intrusion detection systems in place.
🌐 Internet-Facing: HIGH - Unauthenticated exploit allows direct internet-based attacks without credentials.
🏢 Internal Only: HIGH - Even internally, unauthenticated access makes exploitation trivial.
🎯 Exploit Status
Public PoC:
⚠️ Yes
Weaponized:
CONFIRMED
Unauthenticated Exploit:
⚠️ Yes
Complexity:
LOW
Exploitation is straightforward with publicly available proof-of-concept code. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Build 14740 or later
Vendor Advisory: https://www.manageengine.com/products/applications_manager/security-updates/security-updates-cve-2020-15394.html
Restart Required: Yes
Instructions:
1. Download the latest version from ManageEngine website. 2. Backup current installation. 3. Stop the Applications Manager service. 4. Install the update. 5. Restart the service.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict access to Applications Manager REST API endpoints to trusted IP addresses only.
Web Application Firewall
allDeploy WAF with SQL injection protection rules to block malicious requests.
🧯 If You Can't Patch
- Isolate the Applications Manager server in a separate network segment with strict firewall rules
- Implement network-based intrusion detection/prevention systems to monitor for SQL injection attempts
🔍 How to Verify
Check if Vulnerable:
Check the build number in Applications Manager web interface under Help → About. If build number is less than 14740, system is vulnerable.Check Version:
Check via web interface or examine installation directory version files.Verify Fix Applied:
Verify build number is 14740 or higher after patching. Test REST API endpoints for SQL injection vulnerabilities.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed authentication attempts to REST API
- Suspicious POST requests to REST endpoints
Network Indicators:
- SQL injection patterns in HTTP requests
- Unusual outbound connections from Applications Manager server
- Exploit tool traffic patterns
SIEM Query:
source="applications_manager" AND (http_method="POST" AND uri="/api/*" AND (payload CONTAINS "' OR" OR payload CONTAINS "UNION" OR payload CONTAINS "SELECT *"))🔗 References
- https://www.manageengine.com
- https://www.manageengine.com/products/applications_manager/issues.html#v14740
- https://www.manageengine.com/products/applications_manager/security-updates/security-updates-cve-2020-15394.html
- https://www.manageengine.com
- https://www.manageengine.com/products/applications_manager/issues.html#v14740
- https://www.manageengine.com/products/applications_manager/security-updates/security-updates-cve-2020-15394.html
