codeql/ruby/ql/lib/change-notes/released/0.5.0.md

0.5.0

Major Analysis Improvements

• Flow through initialize constructors is now taken into account. For example, in

  class C
    def initialize(x)
      @field = x
    end
  end
  
  C.new(y)
  

  there will be flow from y to the field @field on the constructed C object.

Minor Analysis Improvements

• Calls to Kernel.load, Kernel.require, Kernel.autoload are now modeled as sinks for path injection.
• Calls to mail and inbound_mail in ActionMailbox controllers are now considered sources of remote input.
• Calls to GlobalID::Locator.locate and its variants are now recognized as instances of OrmInstantiation.
• Data flow through the ActiveSupport extensions Enumerable#index_with, Enumerable#pick, Enumerable#pluck and Enumerable#sole are now modeled.
• When resolving a method call, the analysis now also searches in sub-classes of the receiver's type.
• Taint flow is now tracked through many common JSON parsing and generation methods.
• The ReDoS libraries in codeql.ruby.security.regexp has been moved to a shared pack inside the shared/ folder, and the previous location has been deprecated.
• String literals and arrays of string literals in case expression patterns are now recognised as barrier guards.