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JsonSerializer.Deserialize<dynamic> can throw many unexpected exceptions #142

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Metalnem opened this Issue Dec 24, 2018 · 0 comments

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Metalnem commented Dec 24, 2018

In most cases, JsonSerializer throws JsonParsingException when encountering a malformed input. However, JsonSerializer.Deserialize can also throw many unexpected exceptions when deserializing files from the attached archive. These are:

  • ArgumentNullException
  • ArgumentException
  • FormatException
  • IndexOutOfRangeException
  • InvalidOperationException

You can run the following code to reproduce it (the path variable should contain the path to one of the extracted files):

using (var file = File.OpenRead(path))
{
  JsonSerializer.Deserialize<dynamic>(file);
}

Found via SharpFuzz.

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