From b1c73f239fe9af97de837331849f55d67c27561e Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Sun, 2 May 2021 20:52:23 +0900
Subject: [ruby/rdoc] Use File.open to fix the OS Command Injection
 vulnerability in CVE-2021-31799

https://github.com/ruby/rdoc/commit/a7f5d6ab88
---
 test/rdoc/test_rdoc_rdoc.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'test/rdoc/test_rdoc_rdoc.rb')

diff --git a/test/rdoc/test_rdoc_rdoc.rb b/test/rdoc/test_rdoc_rdoc.rb
index 3910dd4656..a83d5a1b88 100644
--- a/test/rdoc/test_rdoc_rdoc.rb
+++ b/test/rdoc/test_rdoc_rdoc.rb
@@ -456,6 +456,18 @@ class TestRDocRDoc < RDoc::TestCase
     end
   end
 
+  def test_remove_unparseable_CVE_2021_31799
+    temp_dir do
+      file_list = ['| touch evil.txt && echo tags']
+      file_list.each do |f|
+        FileUtils.touch f
+      end
+
+      assert_equal file_list, @rdoc.remove_unparseable(file_list)
+      assert_equal file_list, Dir.children('.')
+    end
+  end
+
   def test_setup_output_dir
     Dir.mktmpdir {|d|
       path = File.join d, 'testdir'
-- 
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