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Multiple XSS Vulnerabilities in WordPress
------------------------------------------------------------------------
SUMMARY
<http://wordpress.org/> WordPress is "a state-of-the-art semantic
personal publishing platform with a focus on aesthetics, web standards,
and usability".
The WordPress product has been found to contain multiple cross site
scripting vulnerabilities.
DETAILS
Vulnerable Systems:
* WordPress version 1.2.1 and prior
Immune Systems:
* WordPress version 1.2.2
wp-login.php CSS:
The following code can be seen inside the wp-login.php file:
// If someone has moved WordPress let's try to detect it
if ( dirname('http://' . $_SERVER['HTTP_HOST'] .
$_SERVER['REQUEST_URI']) != get_settings('siteurl') )
update_option('siteurl', dirname('http://' . $_SERVER['HTTP_HOST'] .
$_SERVER['REQUEST_URI']) );
With an URI like
/wp-login.php?=">< script>alert(document.cookie)</script></script>
An attacker is able to store arbitrary values in the global siteurl
setting.
An additional parameter of wp-login.php that is vulnerable is
'redirect_to'.
Multiple /wp-admin/ CSS:
The following files and their corresponding parameters are vulnerable to a
cross site scripting vulnerabilities:
/wp-admin/bookmarklet.php?popupurl=[XSS]
/wp-admin/bookmarklet.php?content=[XSS]
/wp-admin/edit-comments.php?s=[XSS]
/wp-admin/edit-comments.php?s=bla&submit=Search&mode=[XSS]
/wp-admin/templates.php?file=[XSS]
/wp-admin/link-add.php?linkurl=[XSS]
/wp-admin/link-add.php?name=[XSS]
/wp-admin/link-categories.php?cat_id=[XSS]&action=Edit
/wp-admin/link-manager.php?order_by=[XSS]
/wp-admin/link-manager.php?cat_id=[XSS]
/wp-admin/link-manager.php?action=linkedit&link_url=[XSS]
/wp-admin/link-manager.php?action=linkedit&link_name=[XSS]
/wp-admin/link-manager.php?action=linkedit&link_description=[XSS]
/wp-admin/link-manager.php?action=linkedit&link_rel=[XSS]
/wp-admin/link-manager.php?action=linkedit&link_image=[XSS]
/wp-admin/link-manager.php?action=linkedit&link_rss_uri=[XSS]
/wp-admin/link-manager.php?action=linkedit&link_notes=[XSS]
/wp-admin/link-manager.php?action=linkedit&link_id=[XSS]
/wp-admin/link-manager.php?action=linkedit&order_by=[XSS]
/wp-admin/link-manager.php?action=linkedit&cat_id=[XSS]
/wp-admin/post.php?content=[XSS]
/wp-admin/moderation.php?action=update&item_approved=[XSS]
Solution:
Upgrade to WordPress version 1.2.2.
ADDITIONAL INFORMATION
The information has been provided by <mailto:bugtraq@morph3us.org> Thomas
Waldegger.
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