Re: Opera 9 DoS PoC

[Bastian Ahrens <mail () b3cks com>]

Hi,

on (Gentoo) Linux with Firefox (same Version) it's quite similar.
Opening the page FF hangs for about 4 seconds with an CPU usage of about
20 up to 40% and than displays the page.
Clicking on the link I get the same behavior. The page source isn't
displayed correctly if you try looking at it.

Cheers.


 

Bruno Lustosa wrote:
> On 21 Jun 2006 03:39:09 -0000, N9 () critical lt <N9 () critical lt> wrote:
> > Details:
> >
> > Vulnerability can be exploited by using a large value in a href tag
> > to create an out-of-bounds memory access.
> >
> > Proof Of Concept DoS exploit:
> >
> > http://www.critical.lt/research/opera_die_happy.html
>
> Interesting enough, clicking on that link under Firefox 1.5.0.4 made
> it hang for about 20 seconds, consuming 100% cpu time.
> Probably not a vulnerability, although it could be "exploited" to
> annoy users.