HexBrain

LinkedIn · Report #2649615

Forced OAuth authorization using button ID in hash and holding space

Validstatus
mediumseverity
79upvotes
17 Dec 2024disclosed

Summary

An issue with in LinkedIn's OAuth process allows attackers to conduct a social engineering attack to trick a user into authorizing a 3rd party app to bind to their account without explicit consent. Abusing this issue is limited because:

  • This requires social engineering in the form of getting a user to visit a phishing link and press and holding a key on their keyboard.
  • Access granted to 3rd party apps in this manner are also typically very limited.

How it was found

The write-up for this report has not been downloaded yet, or the program disclosed it without one. Read it on HackerOne.

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original