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require_relative '../spec_helper'
require 'tempfile'
require 'tmpdir'
describe "CVE-2018-6914 is resisted by" do
before :each do
@tmpdir = ENV['TMPDIR']
@dir = tmp("CVE-2018-6914")
Dir.mkdir(@dir, 0700)
ENV['TMPDIR'] = @dir
# Make sure that ENV["TMPDIR"] is used by Dir.tmpdir
# https://github.com/ruby/ruby/runs/294462511#step:10:134
10.times do
break if Dir.tmpdir == File.expand_path(@dir)
sleep 0.1
end
@debug_print = ->(actual) {
PP.pp({
actual: actual,
absolute: File.absolute_path(actual),
dir: @dir,
pwd: Dir.pwd,
tmpdir: @tmpdir,
Dir_tmpdir: Dir.tmpdir,
TMPDIR: ENV['TMPDIR'],
stat: File.stat(@dir),
}, STDERR)
}
@dir << '/'
@tempfile = nil
end
after :each do
ENV['TMPDIR'] = @tmpdir
@tempfile.close! if @tempfile
rm_r @dir
end
it "Tempfile.open by deleting separators" do
@tempfile = Tempfile.open(['../', 'foo'])
actual = @tempfile.path
@debug_print.call(actual)
File.absolute_path(actual).should.start_with?(@dir)
end
it "Tempfile.new by deleting separators" do
@tempfile = Tempfile.new('../foo')
actual = @tempfile.path
@debug_print.call(actual)
File.absolute_path(actual).should.start_with?(@dir)
end
it "Tempfile.create by deleting separators" do
actual = Tempfile.create('../foo') do |t|
t.path
end
@debug_print.call(actual)
File.absolute_path(actual).should.start_with?(@dir)
end
it "Dir.mktmpdir by deleting separators" do
actual = Dir.mktmpdir('../foo') do |path|
path
end
@debug_print.call(actual)
File.absolute_path(actual).should.start_with?(@dir)
end
it "Dir.mktmpdir with an array by deleting separators" do
actual = Dir.mktmpdir(['../', 'foo']) do |path|
path
end
@debug_print.call(actual)
File.absolute_path(actual).should.start_with?(@dir)
end
end
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