1 files changed, 15 insertions, 0 deletions
diff --git a/test/openssl/test_pkcs7.rb b/test/openssl/test_pkcs7.rb
index ba8b93d0..96f3f1f6 100644
--- a/test/openssl/test_pkcs7.rb
+++ b/test/openssl/test_pkcs7.rb
@@ -155,6 +155,21 @@ class OpenSSL::TestPKCS7 < OpenSSL::TestCase
     assert_equal(data, p7.decrypt(@rsa1024))
   end
 
+  def test_empty_signed_data_ruby_bug_19974
+    data = "-----BEGIN PKCS7-----\nMAsGCSqGSIb3DQEHAg==\n-----END PKCS7-----\n"
+    assert_raise(ArgumentError) { OpenSSL::PKCS7.new(data) }
+
+    data = <<END
+MIME-Version: 1.0
+Content-Disposition: attachment; filename="smime.p7m"
+Content-Type: application/x-pkcs7-mime; smime-type=signed-data; name="smime.p7m"
+Content-Transfer-Encoding: base64
+
+#{data}
+END
+    assert_raise(OpenSSL::PKCS7::PKCS7Error) { OpenSSL::PKCS7.read_smime(data) }
+  end
+
   def test_graceful_parsing_failure #[ruby-core:43250]
     contents = File.read(__FILE__)
     assert_raise(ArgumentError) { OpenSSL::PKCS7.new(contents) }