Full Disclosure mailing list archives
RE: New (19.10.05) MS-IE Url Spoofing bug (by K-Gen).
From: "Todd Towles" <toddtowles () brookshires com>
Date: Thu, 20 Oct 2005 13:12:26 -0500
It didn't work for me..but once I turned off the pop-up blocker off it did appear to work.
-----Original Message----- From: full-disclosure-bounces () lists grok org uk [mailto:full-disclosure-bounces () lists grok org uk] On Behalf Of K-Gen Gen Sent: Thursday, October 20, 2005 4:49 AM To: full-disclosure () lists grok org uk Subject: [Full-disclosure] New (19.10.05) MS-IE Url Spoofing bug (by K-Gen). New (19.10.05) MS-IE Url Spoofing bug (by K-Gen). Gr337s .. I (K-Gen) have found a new (I think..) URL spoofing bug in IE. Affected : All MS-IE Browsers (Win XP SP2 as well). This allows a malicious website to host a specially crafted A HREF tag that shows to the user as a link to one location, but actually redirects to another. This can be used in Phishing scams and other malicious attacks. The basic idea here is to write a geniune <a href=""> </a>tag but include an onClick event handeler that will redirect (window.location="";) to another page. The next example won't work: <a href="http://microsoft.com" onClick="window.location='http://google.com';">Microsoft</a> Probably there is some protection in IE .. but not enough :) If we try the next thing: <a href="http://microsoft.com" onClick="alert()">Microsoft</a> An alert WILL pop-up before redirecting. The same thing will happen to the document.write(""); method, it will execute before redirection. Hence, the next Proof of Concept: <a href="http://microsoft.com" onClick="document.write(unescape('%3cscript%3ewindow.location= %27http://google.com%27%3c/script%3e'))">Microsoft</a> Put the code into an HTML page and see for yourself. In the status bar and in the properties the link appears as http://microsoft.com , but if you click on the link it will redirect you to http://google.com . I used unescape becuse characters like < > and ' cause run-time errors... This is not extremely critical as the old %01@ bug (That still works on my IE sp1 :lol:), becuase It does not obscure the real link in the Address bar, but i bet there will be a PoC for this one too, sooner or later... Have a Nice Day. K-Gen _______________________________________________ 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:
- RE: New (19.10.05) MS-IE Url Spoofing bug (by K-Gen). Todd Towles (Oct 20)
- <Possible follow-ups>
- Re: New (19.10.05) MS-IE Url Spoofing bug (by K-Gen). sic, das CSIRT der Universitaet Dortmund (Oct 21)
- RE: New (19.10.05) MS-IE Url Spoofing bug (by K-Gen). Billy Rios (Oct 22)