Tickets :: Comment on [#11376] Itip auto-accept requests

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Comment	> A client would like to see auto-updating of the local calendar when a > confirmation itip message is received (and read) by the user. > Apparently, Gmail does this. > > I am not comfortable with this because this is the classic > "triggering an action via unauthenticated data" problem. The concern > is that because anybody can send a message accepting (if they have > the original invite data), there is no guarantee it is from the user > you originally sent the invite to. > > Example: I send an invitation to foo@example.com. However, > bar@example.com sends back an acceptance for foo@example.com. This > is a case where I know something is up/screwy, so I won't accept that > invitation and update foo@example.com's status. Granted, > bar@example.com will probably cover his tracks better (e.g. forging > the from address), but this still shows the problem with > auto-accepting. > > What do people think about this?
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