Virus mail overstressing the mime parser / 2016-04-29

This does not work as planned in mutt:

Subject: hi prnt
Content-Type: multipart/mixed; boundary=31BE31246BD934D65C63831D7238

--31BE31246BD934D65C63831D7238
Content-Type: multipart/alternative; boundary=31BE31246BD934D65C63831D7238

--31BE31246BD934D65C63831D7238
Content-Type: text/plain; charset=UTF-8



--31BE31246BD934D65C63831D7238
Content-Type: text/html; charset=UTF-8

<div dir="ltr"><br></div>

--31BE31246BD934D65C63831D7238--
--31BE31246BD934D65C63831D7238
Content-Type: application/zip; name="816847_304695.zip"
Content-Disposition: attachment; filename="816847_304695.zip"
Content-Transfer-Encoding: base64
X-Attachment-Id: f_519392564

UEsDBBQAAgAIAPVmnUiLxtYfTRIAAA0pAAAUAAAANzM1NzE1NjJfODYzNjA4MTYuanO1Wmt3
2zaT/tye0/+A8rSvxViW7eRt0tp1u4osx67vlyTOOt4ekIQkRCRA8yJZNv3f9xmApKjY6abd

Shows as

  I     1                      [text/plain, 7bit, us-ascii, 0K]
  I     2                       [text/plain, 7bit, utf-8, 0.1K]
  I     3                        [text/html, 7bit, utf-8, 0.1K]