WordPress and WordPress multi-user (MU) unfiltered_html feature cross-site scripting
| wordpress-wordpressmu-unfilteredhtml-xss (36576) |  Medium Risk |
Description:
WordPress and WordPress multi-user (MU) are vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the unfiltered_html privilege feature. By sending a specially-crafted POST request, a remote attacker could exploit this vulnerability using the no_filter field to inject malicious script into a Web page which would be executed in a victim's Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.
Platforms Affected:
- WordPress, WordPress prior to 2.2.3
- WordPress, WordPress multi-user (MU) prior to 1.2.5a
Remedy:
For WordPress:
Upgrade to the latest version of Wordpress (2.2.3 or later), available from the WordPress Web site. See References.
For WordPress multi-user (MU):
Upgrade to the latest version of WordPress multi-user (MU) (1.2.6a or later), available from the WordPress multi-user (MU) Web site. See References.
Consequences:
Gain Access
References:
- Buayacorp Web site, Remote SQL Injection in WordPress and WordPress MU at http://www.buayacorp.com/files/wordpress/wordpress-sql-injection-advisory.html.
- WordPress multi-user (MU) Web site, WordPress MU > Home at http://mu.wordpress.org/.
- WordPress Web site, WordPress at http://wordpress.org/.
- BID-25639: WordPress Unfiltered_HTML Field Name HTML Injection Vulnerability
- CVE-2007-4893: wp-admin/admin-functions.php in Wordpress before 2.2.3 and Wordpress multi-user (MU) before 1.2.5a does not properly verify the unfiltered_html privilege, which allows remote attackers to conduct cross-site scripting (XSS) attacks via modified data to (1) post.php or (2) page.php with a no_filter field.
- FrSIRT/ADV-2007-3132: Wordpress Multiple Parameter Cross Site Scripting and SQL Injection Issues
- SA26771: Wordpress Script Insertion and SQL Injection Vulnerabilities
Reported:
Sep 10, 2007
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