Re: Yahoo Bug Bounty Program Vulnerability #3 XSS on de-mg42.mail.yahoo.com

[Stefan Schurtz <sschurtz () t-online de>]

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Hi Jann,

you're right...bad description here (too much copy & paste) :)

The XSS is cookie-based, so you can find it in the cookie with the
payload.

Please see "&intl=dec52a6"-alert(document.domain)-"c8d9133635e;"

Kind regards,
Stefan

Am 08.03.2014 11:40, schrieb Jann Horn:
> On Sat, Mar 08, 2014 at 11:24:03AM +0100, Stefan Schurtz wrote:
> > The 'intl'-Paramter on "https://de-mg42.mail.yahoo.com/"; is
> > prone to a Cross-site Scripting vulnerability [...] GET 
> > https://de-mg42.mail.yahoo.com/neo/launch?.rand=02j5el0e9m3mr
> >
> > Host: de-mg42.mail.yahoo.com [...]
>
> Uh, where is that intl parameter you speak of? the only parameter
> I see here is .rand, which, as far as I know, just serves to 
> circumvent caching. And where is the XSS payload?

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