Title: WordPress Unfiltered_HTML Field Name HTML Injection Vulnerability
Severity: MODERATE
Description:
WordPress allows users to generate news pages and web-logs dynamically; it is implemented in PHP with a MySQL database.
The application is prone to an HTML-injection vulnerability because it fails to properly sanitize user-supplied input before using it in dynamically generated content. This issue affects data sent to the 'post.php' or 'page.php' scripts, which contain a field named 'no_filter'. The application fails to adequately sanitize arbitrary data inside this field. This input will be stored persistently on the affected site and may be rendered by a victim user when the page is viewed.
Attacker-supplied HTML and script code would execute in the context of the affected site, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user; other attacks are also possible.
Versions prior to WordPress 2.2.3 are vulnerable.
Affected Products:
- Gentoo Linux
- Gentoo Linux 1.4.0
- RedHat Fedora Core7
- WordPress WordPress 0.7.0
- WordPress WordPress 0.71.0
- WordPress WordPress 1.2.0
- WordPress WordPress 1.2.1
- WordPress WordPress 1.2.2
- WordPress WordPress 1.5.0
- WordPress WordPress 1.5.1
- WordPress WordPress 1.5.1 .2
- WordPress WordPress 1.5.1 .3
- WordPress WordPress 1.5.2
- WordPress WordPress 2.0.0
- WordPress WordPress 2.0.1
- WordPress WordPress 2.0.10
- WordPress WordPress 2.0.10-RC1
- WordPress WordPress 2.0.10-RC2
- WordPress WordPress 2.0.2
- WordPress WordPress 2.0.3
- WordPress WordPress 2.0.4
- WordPress WordPress 2.0.5
- WordPress WordPress 2.0.6
- WordPress WordPress 2.0.7
- WordPress WordPress 2.1
- WordPress WordPress 2.1.1
- WordPress WordPress 2.1.2
- WordPress WordPress 2.1.3
- WordPress WordPress 2.1.3
- WordPress WordPress 2.1.3-RC1
- WordPress WordPress 2.1.3-RC2
- WordPress WordPress 2.2
- WordPress WordPress 2.2 Revision 5002
- WordPress WordPress 2.2 Revision 5003
- WordPress WordPress 2.2.1
- WordPress WordPress 2.2.1
- WordPress WordPress 2.2.2
- WordPress Wordpress (B2) 0.6.2
- WordPress Wordpress (B2) 0.6.2 .1
References:
- WordPress: Users without unfiltered_html capability can post arbitrary html
- phpWordPress: phpWordPress Web Site
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