Misconfiguration of Demographics Privacy in a Page

Image for post
Image for post

Description: Demographics is Limit Visibility of This Post, Choose who can see your post on Facebook based on their demographic. For example: If you enter “Spanish” below, only people who have Spanish set as their language on Facebook or list Spanish as one of their languages on their profile will be eligible to see your post on your Page

Impact: It allows the User to view a Page post with audience limitation

Proof Of Concept:
User 1 = Page Admin
User 2 = Page Visitor (Not Friend of User 1 and Doesn’t have role in a page)

1.) User 1 (as the Page) will publish a post in the page
2.) User 1 will click “Edit Post” to edit his new post
3.) User 1 will click “Public” Privacy then change it to “Demographics”
4.) User 1 will set the Limit Visibility of This Post (ex. Gender: Women, Age: 13–14)
5.) Go to User 2 account, Take Note User 2 is a “Male” and Age “20”
6.) Notice That User 2 can still view the Post even though User 1 limit his audience

Proof Of Concept Video: Click Here

Here’s an explanation from Facebook:

Image for post
Image for post

Feb. 08, 2018 — Initial Report
Feb. 15, 2018 — Report Triaged
Mar. 03, 2018 — Temporary Fixed (Facebook Removes the Feature)
Mar. 03, 2018 — Fixed Confirmed
Mar. 14, 2018 — Bounty Awarded

Welcome to a place where words matter. On Medium, smart voices and original ideas take center stage - with no ads in sight. Watch
Follow all the topics you care about, and we’ll deliver the best stories for you to your homepage and inbox. Explore
Get unlimited access to the best stories on Medium — and support writers while you’re at it. Just $5/month. Upgrade

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store