Slack · Report #833080

Tricking the "Create snippet" feature into displaying the wrong filetype can lead to RCE on Slack users

Validstatus

highseverity

$1,500bounty

101upvotes

30 Jun 2020disclosed

Summary

An issue in Slack's Create snippet feature results in filetypes being displayed incorrectly. This can lead to RCE if a Slack user downloads an executable file thinking that it is a CSV or other benign file type.

https://www.youtube.com/watch?v=cIlGfnn4iG8

How it was found

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