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

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Message-ID: <531AF8A3.1050700@t-online.de>
Date: Sat, 08 Mar 2014 12:01:55 +0100
From: Stefan Schurtz <sschurtz@...nline.de>
To: Jann Horn <jann@...jh.net>, full-disclosure@...ts.grok.org.uk
Subject: Re: Yahoo Bug Bounty Program Vulnerability #3 XSS
 on de-mg42.mail.yahoo.com

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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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KSoAnRQAMaK6woO866COwlK1kPsYaueu
=wg9L
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Download attachment "0x62DC6CC0.asc" of type "application/pgp-keys" (1800 bytes)

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