the API endpoint GET [redacted] will return user data for any account - not just your own account - so long as you supply a valid, five-digit user ID. It doesn’t perform any authorization check or ownership validation. “Just increment the number and get someone else’s data,” she wrote.
This data includes users’ email addresses, first and last names, country, dates of birth, and whether the account has been deleted, and the API exposes all 719,517 accounts on the prayer site. “With sequential user IDs and no rate limiting, an attacker could enumerate every single account on the platform,” the hacker explained. “One GET request per user. for i in range(1, 719518): scrape(). That’s it. That’s the exploit.”
My God, that’s horrific. Plus it doesn’t even delete your data if you delete your account, it’s still vulnerable.
They probably meant 6 digit and it was a typo. The rest of the article references 6 digits. If it’s just an integer (highly likely) it would go up to 10 digits or roughly 2 billion max users. My old coworkers and I used to joke that hitting INTEGER.MAX_VALUE for your customer ID is a good problem to have
My God, that’s horrific. Plus it doesn’t even delete your data if you delete your account, it’s still vulnerable.
5 digit user ids, yet over 700k users? Im sure they must have gone up to 6 digits
I tried the endpoint. 5 digits always gives you a valid user, 6 stops working after some point.
They probably meant 6 digit and it was a typo. The rest of the article references 6 digits. If it’s just an integer (highly likely) it would go up to 10 digits or roughly 2 billion max users. My old coworkers and I used to joke that hitting
INTEGER.MAX_VALUEfor your customer ID is a good problem to haveUnless by “digit” they mean any alphanumeric.
You’ve got a lot of options if you go to a 5 characters with letters.
Which they’d kind of have to with 700k users if it’s 5 characters.
If it’s case insensitive, you’ve got 60,000,000+ combinations, and if case sensitive then 916,000,000+ combinations.
It’s numerical only, but the number doesn’t need leading 0s so anything from 1 to 6 digits might be a valid user ID.
That would be an absolute nightmare to administer lol. Though I guess that tracks.
1, 01, 001, 0001, and 00001 would all be different users
Good point, could easily be hex or some higher base
What’s more, scammers now have a list of 750k people known for their gullibility