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Category:   Application (Forum/Board/Portal)  >   WordPress Vendors:   wordpress.org
WordPress Input Validation Hole Lets Remote Users Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1011440
SecurityTracker URL:  http://securitytracker.com/id/1011440
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Updated:  Dec 16 2004
Original Entry Date:  Sep 28 2004
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Exploit Included:  Yes  
Version(s): 1.2, 1.2.1
Description:   An input validation vulnerability was reported in WordPress. A remote user can conduct cross-site scripting attacks.

It is reported that the software does not properly validate user-supplied input in the 'redirect_to' parameter of the 'wp-login.php' script. 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 WordPress 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:

wp-login.php?redirect_to=[XSS]

In December 2004, Thomas Waldegger indicated that version 1.2.1 is also affected by this and other vulnerabilities.

Some demonstration exploit URLs are provided:

/wp-login.php?redirect_to=[XSS]
/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]

It is also reported that a remote user may be able to inject SQL commands. Some demonstration exploit URLs are provided:

/index.php?m=bla
/wp-admin/edit.php?m=bla
/wp-admin/link-categories.php?cat_id=bla&action=Edit

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the WordPress 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:   No solution was available at the time of this entry.
Vendor URL:  wordpress.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:   Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 15 2004 (Gentoo Issues Fix) WordPress Input Validation Hole Lets Remote Users Conduct Cross-Site Scripting Attacks   (Luke Macken <lewk@gentoo.org>)
Gentoo has released a fix.
Dec 16 2004 (Vendor Issues Fix) WordPress Input Validation Hole Lets Remote Users Conduct Cross-Site Scripting Attacks   (Thomas Waldegger <bugtraq@morph3us.org>)
The vendor has issued a fixed version.



 Source Message Contents

Date:  Tue, 28 Sep 2004 18:11:49 -0400
Subject:  [none]


An input validation vulnerability was reported in WordPress.  A remote user can conduct 
cross-site scripting attacks.

The flaw reportedly resides in the 'redirect_to' parameter of the 'wp-login.php' 
script.

A demonstration exploit URL is provided:

wp-login.php?redirect_to=[XSS]
 
 


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