WordPress MU 'wp-includes/wpmu-functions.php' Cross-Site Scripting Vulnerability

BID:34075

Info

WordPress MU 'wp-includes/wpmu-functions.php' Cross-Site Scripting Vulnerability

Bugtraq ID: 34075
Class: Input Validation Error
CVE: CVE-2009-1030
Remote: Yes
Local: No
Published: Mar 10 2009 12:00AM
Updated: Apr 13 2015 10:00PM
Credit: Juan Galiana Lara
Vulnerable: WordPress WordPress MU 1.3.1
WordPress WordPress MU 1.3
WordPress WordPress MU 1.2.3
WordPress WordPress MU 1.2.2
WordPress WordPress MU 2.6
Not Vulnerable: WordPress WordPress MU 2.7

Discussion

WordPress MU 'wp-includes/wpmu-functions.php' Cross-Site Scripting Vulnerability

WordPress MU is prone to a cross-site scripting vulnerability because the application fails to properly sanitize user-supplied input.

An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may help the attacker steal cookie-based authentication credentials and launch other attacks.

Versions prior to WordPress MU 2.7 are vulnerable.

Exploit / POC

WordPress MU 'wp-includes/wpmu-functions.php' Cross-Site Scripting Vulnerability

An attacker can exploit this issue by enticing an unsuspecting user to follow a malicious URI.

The following proof of concept is available:

curl -H "Cookie: my cookies here" -H "Host: <body
onload=alert(String.fromCharCode(88,83,83))>"
http://www.example.com/wp-admin/profile.php> tmp.html
$ firefox tmp.html

Solution / Fix

WordPress MU 'wp-includes/wpmu-functions.php' Cross-Site Scripting Vulnerability

Solution:
The vendor has released WordPress MU 2.7 to address this issue. Please see the references for more information.


WordPress WordPress MU 2.6

WordPress WordPress MU 1.2.2

WordPress WordPress MU 1.2.3

WordPress WordPress MU 1.3

WordPress WordPress MU 1.3.1

References

WordPress MU 'wp-includes/wpmu-functions.php' Cross-Site Scripting Vulnerability

References:

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