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Category:   Application (Forum/Board/Portal)  >   WordPress Vendors:   wordpress.org
WordPress Bugs Let Remote Users Conduct Redirect and Cross-Site Scritping Attacks
SecurityTracker Alert ID:  1040836
SecurityTracker URL:  http://securitytracker.com/id/1040836
CVE Reference:   CVE-2018-10100, CVE-2018-10101, CVE-2018-10102   (Links to External Site)
Updated:  May 7 2018
Original Entry Date:  May 7 2018
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of system information, Modification of user information, Not specified
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Several vulnerabilities were reported in WordPress. A remote user can redirect the target user's browser to an arbitrary site. A remote user can conduct cross-site scripting attacks.

The software does not use the wp_safe_redirect() function when redirecting the login page and SSL is forced. A remote user may be able to create a URL that, when loaded by the target user, will redirect the target user's browser to an arbitrary site [CVE-2018-10100].

The get_the_generator() function does not properly filter HTML code from user-supplied input in the 'version' string before displaying the input in generator tags [CVE-2018-10102]. A remote user can 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.

The wp_http_validate_url() function considers 'localhost' as the same host as the server [CVE-2018-10101]. The impact was not specified.

xknown of the WordPress Security Team, Nitin Venkatesh (nitstorm), and Garth Mortensen of the WordPress Security Team reported these vulnerabilities.

Impact:   A remote user can cause the target user's browser to be redirected to an arbitrary web site.

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:   The vendor has issued a fix (4.9.5) [in April 2018].

The vendor advisory is available at:

https://wordpress.org/news/2018/04/wordpress-4-9-5-security-and-maintenance-release/

Vendor URL:  wordpress.org/news/2018/04/wordpress-4-9-5-security-and-maintenance-release/ (Links to External Site)
Cause:   Input validation error, State error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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