Vulnerability Information

AppSecAI Vulnerability ID: 69654fbefc355c4beda09b69
Vulnerability: SQL Injection
CWE Classification: CWE-89
Severity: Medium
File: src/main/java/org/owasp/benchmark/testcode/BenchmarkTest02369.java
Detection Rule: java.lang.security.audit.sqli.jdbc-sqli.jdbc-sqli
Description: Detected a formatted string in a SQL statement. This could lead to SQL injection if variables in the SQL statement are not properly sanitized. Use a prepared statements (java.sql.PreparedStatement) instead. You can obtain a PreparedStatement using 'connection.prepareStatement'.

Triage Analysis

Status: Confirmed vulnerability
Security Assessment:

Severity: High

Confidence: 100%

Analysis

Clear SQL injection vulnerability exists. User-controlled input flows from HTTP request parameter names through doSomething() into SQL concatenation at line 67 without any sanitization. The variable 'bar' contains the unsanitized parameter name from the request, which is directly concatenated into the SQL INSERT statement using string concatenation instead of prepared statements. An attacker can control HTTP parameter names to inject malicious SQL code.

Recommended Remediation

Replace string concatenation with PreparedStatement: 'String sql = "INSERT INTO users (username, password) VALUES ('foo', ?)"; PreparedStatement pstmt = connection.prepareStatement(sql); pstmt.setString(1, bar); pstmt.executeUpdate();'. This ensures 'bar' is treated as data rather than executable SQL code.

Remediation Details

Fix Description:

Summary

Fixed the SQL injection vulnerability in BenchmarkTest02369.java by replacing string concatenation with a parameterized PreparedStatement.

Changes made (lines 62-69):

1. SQL Query: Changed from string concatenation to parameterized query with placeholder:

   • Before: VALUES ('foo','" + bar + "')
   • After: VALUES ('foo',?)

2. Statement Type: Replaced java.sql.Statement with java.sql.PreparedStatement:

   • Obtained connection from DatabaseHelper
   • Created PreparedStatement with parameterized SQL
   • Bound user input using statement.setString(1, bar)

Security improvement: User input (bar) is now treated as data rather than executable SQL code, completely preventing SQL injection attacks. The PreparedStatement properly escapes and sanitizes the input before execution.

bug_fix_explanation:

The code constructed SQL queries by concatenating user input directly into the SQL string ("VALUES ('foo','" + bar + "')"), allowing attackers to inject malicious SQL commands. For example, an attacker could submit '); DROP TABLE users; -- to execute arbitrary SQL.

Fixed by replacing string concatenation with PreparedStatement parameterization. The SQL query now uses a placeholder (?), and user input is bound separately using statement.setString(1, bar). This approach treats user input as literal data values rather than executable SQL code, making injection attacks impossible. The database driver automatically escapes special characters and enforces type safety.

This fix requires no migration steps - it's a direct code replacement that maintains identical functionality while eliminating the vulnerability. No configuration changes, data migrations, or deployment considerations are needed.

Changes Made:

• Updated source code with secure implementation

This PR was generated automatically to address a security vulnerability.
Please review the changes carefully before merging.