full-disclosure - Vunerability in yahoo webmail.

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Message-ID: <045a01c68e85$ce022740$650ba8c0@DORKA>
Date: Tue Jun 13 02:10:04 2006
From: very at unprivate.com (php0t)
Subject: Vunerability in yahoo webmail.

For the record: 30 minutes after I posted this, onLoad got changed to
onfiltered - problem fixed by yahoo. :)

-----Original Message-----
From: full-disclosure-bounces@...ts.grok.org.uk
[mailto:full-disclosure-bounces@...ts.grok.org.uk] On Behalf Of php0t
Sent: Tuesday, June 13, 2006 2:28 AM
To: full-disclosure@...ts.grok.org.uk
Subject: RE: [Full-disclosure] Vunerability in yahoo webmail.

> Oh, I've CC'd abuse@...oo.com, but if someone else would give them a
proper write-up, and encourage  
> them to close the hole, that'd be wonderful. 

Since yahoo isn't known for fixing bugs fast unless it's serious (and
even then), here's something i wrote up today.
The exploit is turned into a script-kiddish interface. Here's how it
works:
1) you enter your email and the target (@yahoo.com) email
2) an email with the exploit is sent to the target
3) when the target opens the mail for reading, cookies get stolen and
you get a notification on the address specified
4) further instructions on how to log in are on the site.

Tested on IExplore and Opera, works with both.

http://zmailhost.ath.cx/

(I'm taking it down when yahoo fixes it or people abuse it too much)

php0t@...ro.hu

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