Ruby Activemodel Gem -- Circumvention of attr_protected

Aaron Patterson reports: The attrprotected method allows developers to specify a blacklist of model attributes which users should not be allowed to assign to. By using a specially crafted request, attackers could circumvent this protection and alter values that were meant to be protected. All use...

Filter input to avoid XPath injection

In order to avoid XPath injection, user input must be filtered before it ends up in the query. Unfortunately, there's no way to do this with a standard method in PHP, so we need our own filtering function. Current best practice recommends using white lists instead of black lists to allow only a...