Hello list!
These are Cross-Site Scripting vulnerabilities in WordPress. Which I've
disclosed last week.
At WordPress 3.5.2 release, WP developers mentioned about three holes as
"security hardenings" (to decrease their importance and to make it looks
like there were less fixed holes). One of these holes is "Cross-Site
Scripting (XSS) when Editing Media". After I checked media editing
functionality, I've found that it was not one hole, but two holes and these
were persistent XSS.
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Affected products:
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Vulnerable are WordPress 3.5.1 and previous versions.
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Details:
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Cross-Site Scripting (WASC-08):
These are persistent XSS vulnerabilities at page
http://site/wp-admin/post.php?post=1&action=edit in parameters excerpt and
content. For the attack it's needed to bypass protection against CSRF (to
receive token _wpnonce, which can be done with using reflected XSS).
WordPress 3.5.1 XSS-1.html
WordPress 3.5.1 XSS exploit (C) 2013 MustLive.
http://websecurity.com.ua
The code will execute just after sending request at the page
http://site/wp-admin/post.php?post=1&action=edit and at subsequent visiting
this page.
WordPress 3.5.1 XSS-2.html
WordPress 3.5.1 XSS exploit (C) 2013 MustLive.
http://websecurity.com.ua
The code will execute just after sending request at the page
http://site/wp-admin/post.php?post=1&action=edit and at subsequent visiting
this page or the page http://site/page_name/attachment/1/.
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Timeline:
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2013.06.21 - released WordPress 3.5.2.
2013.06.29 - disclosed at my site (http://websecurity.com.ua/6616/).
Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua