From: "alexeymuranov (Alexey Muranov)" <redmine@...>
Date: 2012-05-08T19:02:29+09:00
Subject: [ruby-core:44937] [ruby-trunk - Feature #6409] public_send is easily bypassed


Issue #6409 has been updated by alexeymuranov (Alexey Muranov).


@postmodernl, `send` is a public method, why would `public_send` refuse to call it?  Were you suggesting to remove the `send` method?
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Feature #6409: public_send is easily bypassed
https://bugs.ruby-lang.org/issues/6409#change-26525

Author: postmodern (Hal Brodigan)
Status: Rejected
Priority: Normal
Assignee: 
Category: core
Target version: 2.0.0


=begin
(({public_send})) can easily be bypassed, by using it to call (({send})). (({public_send})) should explicitly not allow calling (({send})).

    class Test
      private

      def secret
        "top secret"
      end
    end

    t = Test.new

    t.public_send(:secret)
    # => NoMethodError: private method `secret' called for #<Test:0x0000000159b950>

    t.public_send(:send, :secret)
    # => "top secret"

    t.public_send(:send, :exec, "rm -rf ~")
=end


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