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-rw-r--r--activesupport/test/core_ext/hash_ext_test.rb21
1 files changed, 21 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index 52ea5f9013..7a414e946f 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -839,6 +839,27 @@ class QueryTest < Test::Unit::TestCase
:person => {:id => [20, 10]}
end
+ def test_expansion_count_is_limited
+ assert_raises RuntimeError do
+ attack_xml = <<-EOT
+ <?xml version="1.0" encoding="UTF-8"?>
+ <!DOCTYPE member [
+ <!ENTITY a "&b;&b;&b;&b;&b;&b;&b;&b;&b;&b;">
+ <!ENTITY b "&c;&c;&c;&c;&c;&c;&c;&c;&c;&c;">
+ <!ENTITY c "&d;&d;&d;&d;&d;&d;&d;&d;&d;&d;">
+ <!ENTITY d "&e;&e;&e;&e;&e;&e;&e;&e;&e;&e;">
+ <!ENTITY e "&f;&f;&f;&f;&f;&f;&f;&f;&f;&f;">
+ <!ENTITY f "&g;&g;&g;&g;&g;&g;&g;&g;&g;&g;">
+ <!ENTITY g "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx">
+ ]>
+ <member>
+ &a;
+ </member>
+ EOT
+ Hash.from_xml(attack_xml)
+ end
+ end
+
private
def assert_query_equal(expected, actual, message = nil)
assert_equal expected.split('&'), actual.to_query.split('&')