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Deleting any Facebook album

7xter.com

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Re: Deleting any Facebook album

#61

It seems like Facebook's Bug Bounty Program payment processor bugbountypayments.com is down http://isup.me/bugbountypayments.com . Anyone have any experience with that site? I haven't heard of it coming up before in security program discussions on HN or elsewhere.

That actually works for me even though isup.me thinks it's down :/

Re: Deleting any Facebook album

#62
I suspect, of course have no proof that the bounty was this size because FB found a large number of other API calls similarly exploitable and locked them down in one go.

Re: Deleting any Facebook album

#63
post #11

Good work. I see a lot of people are surprised at the amount received for this report. Yes, that is typical of both Facebook and Google (and to a lesser extent, Yahoo will pay large sums for particularly bad bugs). They are extremely generous - Facebook recently paid $5000 for a bug report that existed in their careers portal despite that infrastructure being entirely third party. If anyone wants to try and replicate…

Philippe Harewood (@phwd on Twitter) mantains a list of published Facebook bug bounty reports. It's a very good resource for anyone looking to learn about bug bounties and web app security in general: https://www.facebook.com/notes/phwd/facebook-bug-bounties/70...

Re: Deleting any Facebook album

#64
post #23

Is anyone else kind of shocked that this particular vulnerability exists given that Facebook employs "the best and brightest" in the industry? This isn't one of those vulnerabilities that relies on numerous seemingly unrelated steps and makes you wonder how the person ever thought it up. Instead, this is security 101 stuff. Facebook simply wasn't making sure userFor(appKey) == owner(albumId). I would've assumed obvio…

Something tells me you're new to this industry

Re: Deleting any Facebook album

#65
post #47

Earlier quoted context omitted.

That alternative being...

Ruining his aunt's birthday memories? It would ultimately be the hapless users who suffer in some way.

Doubt you would do any real damage, I believe in the past it has been noted that deleting photos on Facebook won't remove the actual images from their servers. So it is likely possible that they could simply identify photos deleted in this way and restore them.

Re: Deleting any Facebook album

#66
post #47

Earlier quoted context omitted.

For the seriousness of this bug 12k doesn't seem like much to me. I don't know if I would turn it in for that little. With my personal dislike of facebook, the alternative is so very, very tempting..

That alternative being...

I'm guessing the alternative he's referring to is the black market.

However I'm not sure if the risk being caught is considered in this. If you can get let's say, X times more in the black market but also risk 10 or 20 or whatever years in jail as well, I'm not sure those 12.5k seem that bad.

Edit: Or maybe doing extortion on someone? but how much could you get by threatening to delete someone's photos? I'm guessing not much... no?

Re: Deleting any Facebook album

#67

If $12,500 seems like a lot of money, remember that Facebook theoretically loses $22,453 for every minute their website is down. In other words, they generate $12,500 every 33 seconds. Paying out that sum of money to increase the number of people searching for security flaws is quite smart.

Yet there's no way to tell FB about problems without having an account (that I could find in 5 minutes). I found potential phishing attempts in the Windows Store, suggested apps right from the start menu. MS refuses to do anything about phishing/scams on their store, and FB offers no way to contact them (I tried a few email addresses like legal@, to no response).

You can (and preferably should) use a Whitehat Test Account to perform your research/make your report: https://www.facebook.com/whitehat/accounts/

apps.facebook.com (Facebook Windows Store) is not in the scope of this bug bounty program though.

Re: Deleting any Facebook album

#69
You guys are missing a key factor. FB paid him $12.5k but didn't lose anything.

Find line of code containing bug and:

    git blame -L2469,2469 -- app/core/shitty_auth.php | \
        egrep -oh '[A-Z][a-z]+ [A-Z][a-z]+' | \
        xargs -I {} python dock_monthly_pay.py \
            --employee-name="{}" --amount=1041.67

Re: Deleting any Facebook album

#70
post #2

Nice! Easy $12500. I'm kicking myself but then again, who woulda thunk?

I really don't understand the down-voting here. It wouldn't take an experienced security researcher to discover this bug and I think many missed it because they assumed such a vulnerability wouldn't exist.
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