Attacking Language Server JSON RPC

2023-03-11

[public] 25.1K views, 3.03K likes, dislikes audio only

While auditing a VSCode Extension + Language Server I noticed something interesting. This turned into the research question "can we attack the extension from the browser?". After a bit of preliminary research I decided to do it again on stream, and eventually made this video. This is how security research can look like.

What is a Server? /youtube/video/VXmvM2QtuMU

What is a Protocol? /youtube/video/d-zn-wv4Di8

GitLab 11.4.7 RCE /youtube/video/LrLJuyAdoAg

Live Stream: https://www.youtube.com/watch?v=jc7S6TtLK_c

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Interested in more videos like this? https://www.youtube.com/playlist?list=PLhixgUqwRTjzSTVPNZduVzMY1yebFrA9m

Chapters:

00:00 - Why Security Research?

01:23 - What is a Language Server?

02:53 - Setup Example Code

04:00 - RCE in VSCode Extension?

05:25 - The Language Server Code

06:29 - Researching Communication

11:13 - Can a Browser Attack the VSCode Extension?

13:54 - Research Results

15:40 - Ad n' Outro

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