spec/ruby/security/cve_2018_6914_spec.rb


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require_relative '../spec_helper'

require 'tempfile'

guard -> {
  ruby_version_is "2.3.7"..."2.4" or
  ruby_version_is "2.4.4"..."2.5" or
  ruby_version_is "2.5.1"
} do
  describe "CVE-2018-6914 is resisted by" do
    before :all do
      @traversal_path = Array.new(Dir.pwd.split('/').count, '..').join('/') + Dir.pwd + '/'
      @traversal_path.delete!(':') if /mswin|mingw/ =~ RUBY_PLATFORM
    end

    it "Tempfile.open by deleting separators" do
      begin
        expect = Dir.glob(@traversal_path + '*').count
        t = Tempfile.open([@traversal_path, 'foo'])
        actual = Dir.glob(@traversal_path + '*').count
        actual.should == expect
      ensure
        t.close!
      end
    end

    it "Tempfile.new by deleting separators" do
      begin
        expect = Dir.glob(@traversal_path + '*').count
        t = Tempfile.new(@traversal_path + 'foo')
        actual = Dir.glob(@traversal_path + '*').count
        actual.should == expect
      ensure
        t.close!
      end
    end

    it "Tempfile.create by deleting separators" do
      expect = Dir.glob(@traversal_path + '*').count
      Tempfile.create(@traversal_path + 'foo')
      actual = Dir.glob(@traversal_path + '*').count
      actual.should == expect
    end

    it "Dir.mktmpdir by deleting separators" do
      expect = Dir.glob(@traversal_path + '*').count
      Dir.mktmpdir(@traversal_path + 'foo')
      actual = Dir.glob(@traversal_path + '*').count
      actual.should == expect
    end

    it "Dir.mktmpdir with an array by deleting separators" do
      expect = Dir.glob(@traversal_path + '*').count
      Dir.mktmpdir([@traversal_path, 'foo'])
      actual = Dir.glob(@traversal_path + '*').count
      actual.should == expect
    end
  end
end