fix: reverse tabnabbing vulnerability in URLs #591
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Tabnabbing - "it's the capacity to act on parent page's content or location from a newly opened page via the back link exposed by the opener javascript object instance."
This vulnerability usually manifests when either
The "target" attribute is used to specify the target location in an anchor tag to open 3rd party URL/resource(s) without including the attribute rel="noopener,noreferrer " in the anchor tag
noopener - When noopener is set, the child window opened will not have access to the parent window via "Window.opener" and at the same time, the parent window will not have access to the child window. "Note that when noopener is used, nonempty target names other than _top, _self, and _parent are all treated like _blank in terms of deciding whether to open a new window/tab."
noreferrer - When noreferrer is set, the child window opened will not have access to parent URL. "In addition, setting this feature also automatically sets noopener."