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I must have done the first link's thing. But once you can do that, this isn't new. Assuming you can append garbage on a PDF, it's the same solution. Admitted
by diminoten 8y ago
I must have done the first link's thing.
But once you can do that, this isn't new. Assuming you can append garbage on a PDF, it's the same solution.
Admittedly I know how easy it is to say, "That's obvious!" in hindsight, but... isn't it?!
- tyingq 8y agoIt is more complex than just writing past the end of file with arbitrary garbage, as you can with a jpg. He explains the method here: https://github.com/corkami/pocs/blob/master/collisions/README.md#pdf https://github.com/corkami/pocs/blob/master/collisions/READM...
- krageon 8y agoThe fact that he produced something easy to see helps cement in the mind of more people exactly how possible it is. It's a benefit not in the sense that it was impossible before, but rather a benefit in the sense that more people will really believe that it is possible.
- diminoten 8y agoI didn't say it wasn't a benefit, I said there is no new innovation here. I was kind of wrong, but only insofar as it uses a different way to embed arbitrary garbage in a PDF instead of directly at the end. The concept is still the same (as it has to be).