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Coldfusion Fusebox V4.1.0 Vulnerability
From: "N.N.P" <version5 () gmail com>
Date: Thu, 4 Aug 2005 11:00:42 +0100
This was discovered by myself over the weekend. I cant find out what versions of fusebox this vulnerability is in but seeing as it affects the main fusebox page I can only assume it is the latest v4.1.0 and possibly some older versions. According to the Fusebox site, What is Fusebox? Fusebox is a standard framework for building web-based applications. Basically the "fusebox" takes all requests for actions such as searching, login etc etc on a site and passes it off to the relevant script (check out their site for more info). Normally you see something like [code] http://www.fusebox.org/index.cfm?fuseaction=fusebox.overview[/code] Basically this vulnerability allows the execution of JS. For example http://www.site.org/index.cfm?fuseaction="><script>document.location="http://silentcode.net"</script> Im sure if anyone feels like screwing around with it im sure you'll find some other interesting problems with it, the thing is like swiss cheese ; ) Comments and critisisms are welcome. Comments: Some sites using fusebox are not vulnerable. It appears to be possible to set a standard page for errors and some filter out the script tags. Also some will work with redirects and normal alert boxes but will filter out document.cookie. In cases like these it often proves useful to leave in the actual fuseaction. This helps avoid the error in some cases. e.g http://www.site.org/index.cfm?fuseaction=fusebox.overview"><script>alert(document.cookie)</script>< Usage: The main usage of this vulnerability would be cookie stealing. This is achieved by redirecting the user to a php script on a site you control with the users cookie as a parameter to the script. Then to avoid raising suspicions redirect them back to the page they thought they were accessing. Google "cookie stealing" for more info. Fix: Filtering all input to the fusebox correctly should solve this. As well as that setting it to surpress errors and having a default error page should also help. Googling for allinurl:/index.cfm?fuseaction= will give you an idea of how many sites are possibly vulnerable. Enjoy, NNP As a side note, if the server isnt set to surpress errors you can get some interesting info such as full path disclosure etc by passing in special characters such as ? e.g https://site.com/index.cfm?fuseaction=? -- http://silentcode.net _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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- Coldfusion Fusebox V4.1.0 Vulnerability N.N.P (Aug 04)