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DataContractJsonSerializer.ReadObject throws ArgumentOutOfRangeException · Issue #28659 · dotnet/runtime · GitHub
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Description
DataContractJsonSerializer.ReadObject sometimes throws ArgumentOutOfRangeException. Here's the full program that reproduces this:
using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.Text;
namespace CoreFX.Fuzz
{
public class Program
{
[DataContract]
private class Obj
{
[DataMember] public DateTime X = DateTime.MinValue;
}
public static void Main(string[] args)
{
var json = @"{""X"":""\/Date()\/""}";
var bytes = Encoding.UTF8.GetBytes(json);
var stream = new MemoryStream(bytes);
var serializer = new DataContractJsonSerializer(typeof(Obj));
serializer.ReadObject(stream);
}
}
}
The stack trace:
Exception has occurred: CLR/System.ArgumentOutOfRangeException
An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in System.Private.CoreLib.dll: 'Index was out of range. Must be non-negative and less than the size of the collection.'
at System.String.IndexOf(Char value, Int32 startIndex, Int32 count)
at System.Runtime.Serialization.Json.JsonReaderDelegator.ParseJsonDateInDefaultFormat(String originalDateTimeValue)
at System.Runtime.Serialization.Json.JsonReaderDelegator.ParseJsonDate(String originalDateTimeValue, DateTimeFormat dateTimeFormat)
at System.Runtime.Serialization.Json.JsonReaderDelegator.ReadElementContentAsDateTime()
at System.Runtime.Serialization.Json.JsonClassDataContract.ReadJsonValueCore(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context)
at System.Runtime.Serialization.Json.JsonDataContract.ReadJsonValue(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context)
at System.Runtime.Serialization.Json.XmlObjectSerializerReadContextComplexJson.ReadDataContractValue(DataContract dataContract, XmlReaderDelegator reader)
at System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator reader, String name, String ns, DataContract& dataContract)
at System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, DataContract dataContract, String name, String ns)
at System.Runtime.Serialization.Json.DataContractJsonSerializerImpl.InternalReadObject(XmlReaderDelegator xmlReader, Boolean verifyObjectName)
at System.Runtime.Serialization.XmlObjectSerializer.InternalReadObject(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver)
at System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver)
at System.Runtime.Serialization.Json.DataContractJsonSerializerImpl.ReadObject(XmlDictionaryReader reader)
at System.Runtime.Serialization.Json.DataContractJsonSerializerImpl.ReadObject(Stream stream)
at System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadObject(Stream stream)
The environment:
.NET Core SDK (reflecting any global.json):
Version: 2.2.103
Commit: 8edbc2570a
Runtime Environment:
OS Name: Mac OS X
OS Version: 10.14
OS Platform: Darwin
RID: osx.10.14-x64
Base Path: /usr/local/share/dotnet/sdk/2.2.103/
Found via SharpFuzz.
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