Create appp.py#9
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Signed-off-by: rajapandi1234 <138785181+rajapandi1234@users.noreply.github.com>
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| # Vulnerable: User input is directly concatenated into the SQL query | ||
| connection = sqlite3.connect('example.db') | ||
| cursor = connection.cursor() | ||
| cursor.execute(f"SELECT * FROM users WHERE name = '{query}'") # SQL injection vulnerability |
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Code scanning / CodeQL
SQL query built from user-controlled sources
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AI over 1 year ago
To fix the SQL injection vulnerability, we should use parameterized queries instead of directly concatenating user input into the SQL query string. Parameterized queries ensure that user input is properly escaped and quoted by the database driver, preventing SQL injection attacks.
In this specific case, we will modify the cursor.execute call to use a parameterized query. This involves replacing the f-string with a query string that contains placeholders (?), and passing the user input as a separate argument to the execute method.
| @@ -13,3 +13,3 @@ | ||
| cursor = connection.cursor() | ||
| cursor.execute(f"SELECT * FROM users WHERE name = '{query}'") # SQL injection vulnerability | ||
| cursor.execute("SELECT * FROM users WHERE name = ?", (query,)) # Use parameterized query to prevent SQL injection | ||
| results = cursor.fetchall() |
| return str(results) | ||
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| if __name__ == '__main__': | ||
| app.run(debug=True) |
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Code scanning / CodeQL
Flask app is run in debug mode
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AI over 1 year ago
To fix the problem, we need to ensure that the Flask application does not run in debug mode in a production environment. The best way to achieve this is by using an environment variable to control the debug mode. This way, we can easily switch between development and production environments without changing the code.
- Import the
osmodule to access environment variables. - Use an environment variable to determine whether to run the app in debug mode.
- Update the
app.runcall to use this environment variable.
| @@ -2,2 +2,3 @@ | ||
| from flask import Flask, request | ||
| import os | ||
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| @@ -20,2 +21,3 @@ | ||
| if __name__ == '__main__': | ||
| app.run(debug=True) | ||
| debug_mode = os.getenv('FLASK_DEBUG', 'False').lower() in ['true', '1', 't'] | ||
| app.run(debug=debug_mode) |
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