Yoast WordPress SEO Plugin Input Validation in 'snippet preview' Flaw Permits Cross-Site Scripting Attacks
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Yoast WordPress SEO Plugin Input Validation in 'snippet preview' Flaw Permits Cross-Site Scripting Attacks
6/15/2015 12:00:00 AM
| Yoast WordPress SEO Plugin Input Validation in 'snippet preview' Flaw Permits Cross-Site Scripting Attacks |
| SecurityTracker Alert ID: 1032580 |
| SecurityTracker URL: http://securitytracker.com/id/1032580 |
| CVE Reference: GENERIC-MAP-NOMATCH (Links to External Site) |
| Date: Jun 15 2015 |
| Impact: Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information |
| Fix Available: Yes Vendor Confirmed: Yes Exploit Included: Yes |
| Version(s): prior to 2.2 |
| Description: A vulnerability was reported in Yoast WordPress SEO Plugin. A remote user can conduct cross-site scripting attacks. The 'snippet preview' function in the admin panel does not properly filter HTML code from user-supplied input before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Yoast WordPress SEO (WordPress Plugin) software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user. A demonstration exploit URL is provided: http://[target]/wp-admin/post-new.php?post_title=<img onerror=alert(1) src=> The original advisory is available at: https://inventropy.us/blog/yoast-seo-plugin-cross-site-scripting-vulnerability/ Charles Neill reported this vulnerability. |
| Impact: A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Yoast WordPress SEO (WordPress Plugin) software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user. |
| Solution: The vendor has issued a fix (2.2). The vendor's advisory is available at: https://yoast.com/wordpress-seo-2-2/ |
| Vendor URL: yoast.com/wordpress-seo-2-2/ (Links to External Site) |
| Cause: Input validation error |
| Underlying OS: Linux (Any), UNIX (Any), Windows (Any) |
| |
| Message History: None. |
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