Python Snippet #05
This challenge covers the review of a snippet of code written in Python
The Code Review Snippet challenges offer a hands-on approach to learning by presenting a snippet of vulnerable code. In this particular challenge, you'll examine a method called get_post that retrieves a post based on its ID. The method uses a regular expression to validate the post ID and then executes an SQL query to fetch the post. However, the use of the re.M flag in the regular expression introduces a vulnerability that can lead to SQL injection. This allows an attacker to manipulate the SQL query and potentially gain unauthorized access to the database.
The video transcript explains each part of the code in detail, from the connection to the database to the execution of the SQL query. It highlights the issue with the re.M flag, which allows multi-line evaluation and can be exploited to inject malicious SQL code. By understanding this vulnerability, you can learn how to spot similar issues in other code and improve your skills in secure coding practices.