fixing strip tags vulnerability

mejibyte · Aug 16, 2011 · 60f783d · 60f783d
1 parent 6b46d65
commit 60f783d
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/node.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/node.rb
@@ -162,7 +162,7 @@ def parse(parent, line, pos, content, strict=true)
           end
 
           closing = ( scanner.scan(/\//) ? :close : nil )
-          return Text.new(parent, line, pos, content) unless name = scanner.scan(/[-:\w\x00-\x09\x0b-\x0c\x0e-\x1f]+/)
+          return Text.new(parent, line, pos, content) unless name = scanner.scan(/[^\s!>\/]+/)
           name.downcase!
 
           unless closing

diff --git a/actionpack/test/controller/html-scanner/sanitizer_test.rb b/actionpack/test/controller/html-scanner/sanitizer_test.rb
@@ -5,6 +5,13 @@ def setup
     @sanitizer = nil # used by assert_sanitizer
   end
 
+  def test_strip_tags_with_quote
+    sanitizer = HTML::FullSanitizer.new
+    string    = '<" <img src="trollface.gif" onload="alert(1)"> hi'
+
+    assert_equal ' hi', sanitizer.sanitize(string)
+  end
+
   def test_strip_tags
     sanitizer = HTML::FullSanitizer.new
     assert_equal("<<<bad html", sanitizer.sanitize("<<<bad html"))