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Fix DoS attack vulnerability in VMess Option Processing

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This commit is contained in:
Shelikhoo 2022-06-12 23:29:09 +01:00 • committed by yuhan6665
parent ba4ce4c24f
commit d4f18b1342
4 changed files with 72 additions and 45 deletions
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10
proxy/vmess/outbound/outbound.go
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@ -158,7 +158,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
return newError("failed to encode request").Base(err).AtWarning()
}
bodyWriter := session.EncodeRequestBody(request, writer)
bodyWriter, err := session.EncodeRequestBody(request, writer)
if err != nil {
return newError("failed to start encoding").Base(err)
}
bodyWriter2 := bodyWriter
if request.Command == protocol.RequestCommandMux && request.Port == 666 {
bodyWriter = xudp.NewPacketWriter(bodyWriter, target)
@ -194,7 +197,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
}
h.handleCommand(rec.Destination(), header.Command)
bodyReader := session.DecodeResponseBody(request, reader)
bodyReader, err := session.DecodeResponseBody(request, reader)
if err != nil {
return newError("failed to start encoding response").Base(err)
}
if request.Command == protocol.RequestCommandMux && request.Port == 666 {
bodyReader = xudp.NewPacketReader(&buf.BufferedReader{Reader: bodyReader})
}