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Having router socket binded to port x.
Obtain packet sender from https://packetsender.com/ or something similar
Use the packet sender and send packet with following hex value: ff ff ff ff ff ff ff ff e2 aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa
to port x
This results in:
System.OverflowException: Array dimensions exceeded supported range.
at NetMQ.GCBufferPool.Take(Int32 size)
at NetMQ.Msg.InitPool(Int32 size)
at NetMQ.Core.Transports.V1Decoder.EightByteSizeReady()
at NetMQ.Core.Transports.DecoderBase.ProcessBuffer(ByteArraySegment data, Int32 size)
at NetMQ.Core.Transports.StreamEngine.ProcessInput()
and this crashes whole application.

This can be triggered for example by security scanner (that's how we learned)

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