Re: Google vulnerabilities with PoC

[Brandon Perry <bperry.volatile () gmail com>]

Yes, these are legitimate points.

Sent from a computer

> On Mar 13, 2014, at 12:43 PM, Źmicier Januszkiewicz <gauri () tut by> wrote:
>
> : you could upload huge blobs and just take up space on the google servers.
> How many people upload gigabytes of crappy videos on google servers,
> hourly? So far, the DDoS didn't happen for some reason, even
> considering the amount of users. There is a small potential to exploit
> this via a botnet, but what's the gain? YT upload breaks? Wow, so much
> win.
>
> By the way, why not just upload some valid, generated on the fly MPEG
> stream? The effect is the same if you consider the data amount, but
> without all the "unrestricted" shouts and academic vulnerabilities.
>
>
> 2014-03-13 18:33 GMT+01:00 Brandon Perry <bperry.volatile () gmail com>:
> > If you were evil, you could upload huge blobs and just take up space on the google servers. Who knows what will 
> > happen if you upload a couple hundred gigs of files. They dont disappear, they are just unretrievable afaict. It is 
> > a security risk in the sense that untrusted data is being persisted *somewhere*.
> >
> > Upload a couple terabytes, cause a DoS because some hdd in the DC fills up. Who knows.
> >
> > Sent from a computer
> >
> > On Mar 13, 2014, at 12:28 PM, Michal Zalewski <lcamtuf () coredump cx> wrote:
> >
> > > > The only reasonable way to 'exploit' the bug is using youtube as a
> > > > "personal storage" uploading non-video files to your own profile: so what?
> > >
> > > That would require a way to retrieve the stored data, which - as I
> > > understand - isn't possible here (although the report seems a bit
> > > hard-to-parse). From what I recall, you can just upload a blob of data
> > > and essentially see it disappear.
> > >
> > > We do have quite a few services where you can legitimately upload and
> > > share nearly-arbitrary content, though. Google Drive is a good
> > > example.
> > >
> > > /mz
> > >
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