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Simon Willison’s Weblog

Logout/Login CSRF. Alf Eaton built an example page (this link goes to his description, not the page itself) that uses a login CSRF attack to log you in to Google using an account he has created. Scary.

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3 comments

  1. Still, doesn't this give a savvy victim total access to the attacking Google account? One could easily change the password and lock the attacker out of his own account...

    Don't get me wrong, it's a good proof-of-concept, but I doubt we'll be seeing this variety in the wild much.

    Joey Tyson - 25th September 2008 07:12 - #

  2. Joey,
    The attacker makes a throw away account. The account merely exists as a data collection vector for the victims to run under to.
    If a particular attacker account is lost, so what. I still have 9,999 credit cards from the other accounts.

    Jeremy Dunck - 25th September 2008 23:44 - #

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