Full Disclosure mailing list archives
Re: BBCode [IMG] [/IMG ] Tag Vulnerability
From: "milw0rm Inc." <milw0rm () gmail com>
Date: Sun, 21 Aug 2005 19:57:28 -0500
alrighty, How can this be done with header location being called in the middle of the page? <img src="http://www.site.biz/test/test.jpg" border="0" /> Tested on phpbb 2.0.17 default install with a no go. /str0ke On 8/21/05, h4cky0u <h4cky0u.org () gmail com> wrote:
Hi, Saw this one on www.waraxe.us (Discovered by Easyex) and i was thinking if there are some more possibilities using the method described. The POC below is for phpBB. - ========== make yourself a folder on your host rename the folder to signature.jpg this will trick bbcode that its an image file. example http://sitewithmaliciouscode/signature.jpg inside that folder .. put this code .. and rename it to index.php file. Quote: <?php header("Location: http://hosttobeexploited/phpBB/login.php?logout=true"); exit; ?> this will make every visitor getting logout when they view the thread that have image linked to this. =================== This seems to be working on almost all the scripts using BBcode. Successfully tested on vBulletin 3.0.7 and phpBB 2.0.17 when used the image link to the folder with the malicious code as the forum signature. What i was wondering is there anything more serious than logging out the users that can be done with this? The admin folders of ipb and phpbb need reauthentication. So nothing serious for them but anything more innovative that could be done? And any way to fix this? Regards, -- http://www.h4cky0u.org (In)Security at its best... _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
_______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- BBCode [IMG] [/IMG ] Tag Vulnerability h4cky0u (Aug 21)
- Re: BBCode [IMG] [/IMG ] Tag Vulnerability milw0rm Inc. (Aug 22)
- Re: BBCode [IMG] [/IMG] Tag Vulnerability Paul Laudanski (Aug 22)
- Re: BBCode [IMG] [/IMG] Tag Vulnerability Christoph Frick (Aug 22)
- Re: Re: BBCode [IMG] [/IMG] Tag Vulnerability Paul Laudanski (Aug 22)
- Re: BBCode [IMG] [/IMG] Tag Vulnerability Christoph Frick (Aug 22)
- <Possible follow-ups>
- Re: BBCode [IMG] [/IMG ] Tag Vulnerability Jan Kantert (Aug 22)