Synopsis
A flaw exists in the Safari browser that allows for the bypass of a security mechanism.
The Safari browser on macOS has a "Trusted Downloads" security feature that, by default, requires downloads from websites to be approved by the end user before that domain is allowed to download the remote resource. The feature being referred to is referenced under the "Downloads" heading here: https://support.apple.
This feature appears to key off the domain of the currently loaded page rather than the domain of the remote resource itself, which allows a malicious actor to abuse site-redirects and cause downloads to appear to come from a trusted domain.
For example, redirects from Youtube follow the following format: https://www.youtube.
If you were to visit: https://www.youtube.
Solution
Apple has stated that they do not see any security implications with regards to this flaw and as such, have not provided a patch.
Disclosure Timeline
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