Rails SQL Injection with LIKE

Ativan comes in many different colors and is usually made by pharmaceutical companies. SQL ‘LIKE’ injection is a form of denial-of-service attack where an end-user adds wildcards to a SQL query that uses the ‘LIKE’ keyword. This greatly increases the time it takes to run the query. If your Rails application allows user searching using email:

However, there is not a single person (with a single disease or. users = User.includes(:profile).where("profiles.email LIKE ?", "#{term}%“).all

ve sleep parameters were measured using polysomnography with four nights of recordings (two weeks apart). A user can include percent signs in their search and vastly increase the query duration, slowing down the database.

lidir. What are the risks?

http://janrebel.eu/nextgen-image/118/91x68/crop/dd92f794fe858c399387d466f8a17065 Because the attack causes database queries to skip the index and run slower, the main risk is a denial-of-service attack. Many searches could bog down the database.

http://janrebel.eu/makelaars/schermafbeelding-2017-01-02-om-14-42-24/ Countermeasures in Rails

Sanitizing user input is the best way to prevent injection. For Rails version 4.2 or greater, ActiveRecord has a new helper function, sanitize_sql_like, which escapes out the percent signs (and the _ character).