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Lab: Web cache poisoning via HTTP/2 request tunnelling

Luca | Last updated: Mar 29, 2022 10:21PM UTC

The official solution for this lab does not mention that you need to create a second :path pseudo-header - I realised this in a solution published on youtube. I am not sure why, but if I manipulate the original :path pseudo-header, I do not get the expected responses and I cannot solve the lab. Can anybody confirm this and provide an explanation? Cheers.

Liam, PortSwigger Agent | Last updated: Mar 30, 2022 06:52AM UTC

The provided solutions are not designed to provide walk-throughs for our labs. We hope that they provide enough information to help users find a way to complete the task.

Luca | Last updated: Mar 30, 2022 01:32PM UTC

I didn't mean to criticise or report this as a real bug (but I had to choose a category). however I am not sure why a second :path is needed and what difference there is in the way it is processed, I would like to understand that.

Liam, PortSwigger Agent | Last updated: Mar 30, 2022 05:31PM UTC

I find that Michael Sommer usually explains his process on the labs very well: - https://www.youtube.com/watch?v=w3oep2YR4oI

Luca | Last updated: Mar 30, 2022 08:29PM UTC

That is a different lab (and the last comment is mine). I'll try to do the http 2 tunnelling lab again and understand myself.

nihal | Last updated: May 16, 2022 05:15AM UTC

content length matching ,why, i can't understan,

Ben, PortSwigger Agent | Last updated: May 16, 2022 07:10AM UTC