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IOS 14.4 Proxy [the client failed to negotiate a tls connection]

Sunny | Last updated: Feb 24, 2021 04:07PM UTC

Hello, I am having problems with proxy on IOS 14.4, errors like this appear: https://i.imgur.com/HIxNen5.png Video 1: https://youtu.be/TboOyCQ_4uE Video 2: https://youtu.be/zFaQkveSwoY I tried to disable TSLv1.3, but none of this helps, please tell me what to do in this situation?

Ben, PortSwigger Agent | Last updated: Feb 24, 2021 06:57PM UTC

Hi, Have you enabled full trust for the imported Burp CA Certificate on your iOS device? On iOS 14 you should be able to switch this setting on and off via Settings -> General -> About -> Certificate Trust Settings.

Sunny | Last updated: Feb 24, 2021 07:22PM UTC

Oh, exactly, I didn't know that, thanks :)

Gprime31 | Last updated: Feb 25, 2021 02:58AM UTC

Still gives TLS errors

Ben, PortSwigger Agent | Last updated: Feb 25, 2021 08:44AM UTC

Hi, Are you able to provide us with any details of the setup that you currently have?

Antoine | Last updated: Apr 15, 2022 11:52AM UTC

Hi, I face the same issue as Gprim31. My configuration is as follow: - Use an iPhone - my Desktop where burp proxy is listening - Iphone + desktop are on the same wireless network I followed burp page to config both Iphone wifi + burp proxy Try to enable/disable TLS v1.3 but it is the same thing I have got: "The client failed to negociate a TLS connection to" "Timeout in communication" The vast majority of HTTPS communication are good. The erros occurs when I tried to reach *.instagram.com/*.facebook directly from the apps (no problem from the browser)

Hannah, PortSwigger Agent | Last updated: Apr 15, 2022 03:01PM UTC