CVE-2020-9398
📋 TL;DR
This vulnerability allows SQL injection attacks in ISPConfig control panels where the undocumented 'reverse_proxy_panel_allowed=sites' option has been manually enabled. Attackers can execute arbitrary SQL commands against the database. Only ISPConfig installations with this specific configuration are affected.
💻 Affected Systems
- ISPConfig
📦 What is this software?
Ispconfig by Ispconfig
Ispconfig by Ispconfig
Ispconfig by Ispconfig
Ispconfig by Ispconfig
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise allowing data theft, modification, or deletion, potentially leading to full system takeover if database privileges permit.
Likely Case
Database information disclosure, authentication bypass, or privilege escalation within ISPConfig.
If Mitigated
No impact if the vulnerable configuration is not enabled or the system is patched.
🎯 Exploit Status
Exploitation requires access to ISPConfig interface and the specific configuration to be enabled.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.15p3
Vendor Advisory: https://www.ispconfig.org/blog/ispconfig-3-1-15p3-released-security-bugfix-release/
Restart Required: No
Instructions:
1. Backup your ISPConfig installation and database. 2. Update to ISPConfig 3.1.15p3 or later. 3. Verify the update completed successfully.
🔧 Temporary Workarounds
Disable vulnerable configuration
linuxRemove or disable the 'reverse_proxy_panel_allowed=sites' option from ISPConfig configuration.
Edit ISPConfig configuration files to remove 'reverse_proxy_panel_allowed=sites' setting
🧯 If You Can't Patch
- Disable the 'reverse_proxy_panel_allowed=sites' configuration option immediately.
- Implement network segmentation to restrict access to ISPConfig interface.
🔍 How to Verify
Check if Vulnerable:
Check ISPConfig version and verify if 'reverse_proxy_panel_allowed=sites' is enabled in configuration.Check Version:
Check ISPConfig version in web interface or configuration files.Verify Fix Applied:
Confirm ISPConfig version is 3.1.15p3 or later and check configuration files for vulnerable setting.📡 Detection & Monitoring
Log Indicators:
- Unusual database queries from ISPConfig application
- SQL error messages in application logs
Network Indicators:
- Suspicious HTTP requests to ISPConfig reverse proxy endpoints
SIEM Query:
Search for SQL error patterns or unusual database access from ISPConfig application.