[devit]

Based on a web search, https://bogdanz.me/work/diddu.html might be a working mirror of the proof of concept.

It appears to contain a 10MB long UTF-8 mess in both the og:title meta content and in a mailto: link.

I'd guess it's supposed to crash iOS apps by either posting that link if it displays links in a thumbnail element using og:title or otherwise by pasting the huge mailto link contained in the webpage, or perhaps only the e-mail address.

[netsharc]

Hah. View-Source takes forever to load (in Vivaldi). Wget says it's a 20 MB file. Opening it in Joe in Cygwin kills the Cygwin process. Neat.

Also the href attribute inside the <link rel="apple-touch-icon"> points to a HTML URL, but that returns a 404...

[Someone1234]

That site caused Firefox 57 (64bit) to lock up on Windows 10...

It is an i7, 16 GB total (7 GB free), and an SSD.

[testplzignore]

Same for me, except on Windows 7. CPU spiked to 100% and I warmed up my hands with the extra heat :). Closing the tab and waiting a minute or so (the usual thing I do for cpu/memory intensive pages like this) didn't work. I had to completely restart Firefox to get it back to normal.

[yorby]

I have Firefox 58/64bit/Linux and it slowed down Firefox on my i5 with 16GB ram (2GB free) w/ HDD for about 1 second... it didn't lock it up because any action that I did on firefox was slowed down by about 1 second... other programs seemed fine too.

[aluhut]

It didn't completely lock up on W7 FF 57.

The lock ups came in waves but was able to close the tab when it was unlocked.

[a_t48]

This is arguably spam. The "link to fix iMessage if it crashes" just opens up a ton of ads with women in lingerie.

[lawlessone]

Could someone just use some sort of fuzzing software to generate these?

Just keep trying many until one hits.

[UncleMeat]

You can, but the number of possible inputs is huge and fuzzing won't prove that no such input exists.

[hamandcheese]

Can confirm, just crashed my friends iPhone X. Required a hard reboot, was locked up completely.