CVE-2020-12870
📋 TL;DR
CVE-2020-12870 is a SQL injection vulnerability in RainbowFish PacsOne Server version 6.8.4 that allows attackers to execute arbitrary SQL commands through the username parameter on the signup page. This affects healthcare organizations using this medical imaging server software. Successful exploitation could lead to data theft, system compromise, or service disruption.
💻 Affected Systems
- RainbowFish PacsOne Server
📦 What is this software?
Pacsone Server by Rainbowfishsoftware
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to theft of sensitive medical imaging data, patient records, and administrative credentials, potentially enabling remote code execution on the server.
Likely Case
Unauthorized access to database contents, extraction of sensitive information, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only affecting non-sensitive data if least privilege is enforced.
🎯 Exploit Status
The signup page is typically accessible without authentication, making exploitation straightforward with publicly available proof-of-concept code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.8.5 or later
Vendor Advisory: https://www.pacsone.net/download.htm
Restart Required: Yes
Instructions:
1. Download the latest version from the vendor website. 2. Backup current installation and data. 3. Install the updated version following vendor instructions. 4. Restart the PacsOne Server service.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize username parameter
Not applicable - requires code changes
Web Application Firewall
allDeploy WAF with SQL injection rules to block malicious requests
Not applicable - configuration dependent
🧯 If You Can't Patch
- Restrict network access to the signup page using firewall rules or authentication
- Implement database-level controls with minimal privileges for application accounts
🔍 How to Verify
Check if Vulnerable:
Test the signup page with SQL injection payloads in the username parameter and observe database errors or unexpected behavior.Check Version:
Check the server version in the web interface or configuration files (typically in About section or server settings)Verify Fix Applied:
After patching, attempt the same SQL injection tests and verify they are properly rejected without database errors.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL syntax in username fields
- Database error messages in application logs
- Multiple failed signup attempts with special characters
Network Indicators:
- HTTP POST requests to signup endpoint containing SQL keywords like UNION, SELECT, or DROP
SIEM Query:
source="web_logs" AND uri="/signup" AND (username CONTAINS "'" OR username CONTAINS "--" OR username CONTAINS "UNION")