When you have the option turned on to verify a users email address before they can post. This feature is working properly. But we have found that spammers are now creating the accounts. Verifying them. Then they go and change their email address in their profile. It does not reverify the email address. The result is that they can put anything in there and it will take it. They then go on to create more new accounts using the original email address they just used previously.
I'm pretty sure the spammers have scripted this as we are getting 20 or so of these per day where they create an account then change the email address afterwards.
My suggestion would be a reverification of an email address to complete an email change. That will stop this exploit from happening. It also might be good to log what then original email address was that setup the account.
#216382 - 08/11/0801:37 PMRe: 7.3 exploit - Use one email address to create multiple accounts.
[Re: Gizmo]
Rick
Registered: 06/04/06
Posts: 7567
Loc: Aberdeen, WA
I can get this in, but my only thought is how to handle a fat-fingered email address. If you change your email, but make a typo, then you're not going to be able to validate the new email address since you won't get it and thus be locked out of your account.
I guess it just becomes a matter of contacting the admin at that point, but was looking for a more elegant solution.