CVE-2020-37163 Overview
CVE-2020-37163 is a SQL Injection vulnerability affecting QuickDate version 1.3.2, a dating website script. The vulnerability exists in the find_matches endpoint where the _located parameter fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows remote attackers to inject malicious UNION-based SQL statements to extract sensitive database information including user credentials, database name, and system version.
Critical Impact
Remote attackers can exploit this SQL injection to extract sensitive database information, including user credentials and system data, without authentication.
Affected Products
- QuickDate 1.3.2
- QuickDate dating website script (versions prior to patch)
Discovery Timeline
- 2026-02-07 - CVE CVE-2020-37163 published to NVD
- 2026-02-09 - Last updated in NVD database
Technical Details for CVE-2020-37163
Vulnerability Analysis
This vulnerability is classified as CWE-89 (SQL Injection), which occurs when user-controllable input is incorporated into database queries without proper sanitization or parameterization. In QuickDate 1.3.2, the find_matches endpoint accepts a _located parameter that is directly concatenated into SQL queries, enabling attackers to manipulate the query structure.
The network-accessible nature of this vulnerability means attackers can exploit it remotely without requiring any authentication or user interaction. Successful exploitation allows unauthorized access to the underlying database, enabling data exfiltration of sensitive information including user credentials, database metadata, and system version information.
Root Cause
The root cause of this vulnerability is improper input validation and the absence of parameterized queries in the find_matches endpoint. The application fails to sanitize the _located parameter before using it in SQL query construction, allowing attackers to break out of the intended query context and inject additional SQL commands.
Attack Vector
The attack is network-based and targets the find_matches endpoint with a crafted _located parameter containing UNION-based SQL injection payloads. Attackers can craft requests that append additional SQL SELECT statements to extract data from arbitrary database tables. The UNION-based technique allows attackers to combine results from the original query with results from injected queries, effectively dumping database contents through the application's normal response mechanism.
Exploitation involves sending HTTP requests with malicious SQL syntax in the _located parameter. The injected UNION SELECT statements can target system tables to enumerate database structure, followed by extraction of sensitive data such as usernames, password hashes, and email addresses from user tables. For detailed technical analysis and proof-of-concept information, see the Exploit-DB #48022 and VulnCheck QuickDate SQL Injection Advisory.
Detection Methods for CVE-2020-37163
Indicators of Compromise
- HTTP requests to the find_matches endpoint containing SQL keywords such as UNION, SELECT, FROM, or -- in the _located parameter
- Unusual database query patterns or errors in application logs indicating SQL syntax errors
- Unexpected data extraction patterns or abnormally large response sizes from the find_matches endpoint
- Database audit logs showing queries accessing system tables or user credential tables
Detection Strategies
- Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the _located parameter
- Deploy intrusion detection systems (IDS) with signatures for common SQL injection payloads including UNION-based attacks
- Monitor application logs for repeated requests to find_matches with suspicious parameter values
- Enable database query logging and alert on queries containing unexpected UNION or subquery operations
Monitoring Recommendations
- Configure real-time alerting for SQL injection attempt patterns in web server access logs
- Monitor database connections for unusual query patterns or unauthorized access to sensitive tables
- Implement anomaly detection for response size variations from the find_matches endpoint
- Review authentication logs for access attempts following potential credential extraction
How to Mitigate CVE-2020-37163
Immediate Actions Required
- Immediately apply input validation and parameterized queries to the find_matches endpoint
- Deploy Web Application Firewall rules to filter SQL injection attempts targeting the _located parameter
- Audit database access logs to identify potential prior exploitation
- Consider temporarily disabling or restricting access to the find_matches functionality until patched
Patch Information
QuickDate users should consult the vendor or community resources for available patches. The original QuickDate website is no longer active; an archived version is available at the Archived QuickDateScript Site. Organizations running affected versions should prioritize upgrading or implementing compensating controls. For additional advisory information, refer to the VulnCheck QuickDate SQL Injection Advisory.
Workarounds
- Implement parameterized queries or prepared statements for all database interactions involving user input
- Deploy input validation that rejects requests containing SQL metacharacters in the _located parameter
- Use a Web Application Firewall configured with SQL injection protection rules
- Restrict database user permissions to limit the impact of successful SQL injection attacks
# Example WAF rule configuration for ModSecurity
SecRule ARGS:_located "@rx (?i)(union.*select|select.*from|--|;)" \
"id:100001,phase:2,deny,status:403,msg:'SQL Injection Attempt Blocked'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
