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Hackers claim $10,000 prize for breaking into StrongWebmail

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Re: Hackers claim $10,000 prize for breaking into StrongWebmail

#13
Since everyone is venturing a guess, here's mine:

They used XSS (cross site scripting) to send a mail to the target. When the email is viewed a CSRF (cross site request forgery) is executed to add a new device (phone) to the authenticated devices list. Next they log in, receive the SMS on their phone that is now in the list...bam!

[Edit: I didn't mean XSS to send the email, I meant inject an XSS attack into the email and send it. I'm thinking something like psuedo: location.replace(/link/to/add/device/?phone=555-1212 ]

Re: Hackers claim $10,000 prize for breaking into StrongWebmail

#14
post #13

Since everyone is venturing a guess, here's mine: They used XSS (cross site scripting) to send a mail to the target. When the email is viewed a CSRF (cross site request forgery) is executed to add a new device (phone) to the authenticated devices list. Next they log in, receive the SMS on their phone that is now in the list...bam! [Edit: I didn't mean XSS to send the email, I meant inject an XSS attack into the email…

As jgrahamc pointed out: http://news.ycombinator.com/item?id=642280

They probably sent the mail like you said, only used the CSRF to jack the cookie, which would be easier than adding a phone to the list.

Re: Hackers claim $10,000 prize for breaking into StrongWebmail

#18
post #3

I wonder if they have a viable business after this. Seems like this could be a deathblow right off the bat.

They had no viable business plan to begin with. Google and Yahoo mail are among the top 10 trophy targets on the Internet. I have no idea how you'd convince me some startup had put more resources into securing mail than Google did.

Re: Hackers claim $10,000 prize for breaking into StrongWebmail

#20
post #13

Since everyone is venturing a guess, here's mine: They used XSS (cross site scripting) to send a mail to the target. When the email is viewed a CSRF (cross site request forgery) is executed to add a new device (phone) to the authenticated devices list. Next they log in, receive the SMS on their phone that is now in the list...bam! [Edit: I didn't mean XSS to send the email, I meant inject an XSS attack into the email…

As jgrahamc pointed out: http://news.ycombinator.com/item?id=642280 They probably sent the mail like you said, only used the CSRF to jack the cookie, which would be easier than adding a phone to the list.

Can you explain what the CSRF attack you're thinking of is? Maybe I'm not reading you carefully enough (long day), but that doesn't sound like a CSRF to me.
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