The Page Builder: KingComposer plugin for WordPress is vulnerable to Arbitrary File Uploads in versions up to, and including, 2.9.3 via the 'process_bulk_action' function in the 'kingcomposer/includes/kc.extensions.php' file. This makes it possible for authenticated users with author level permissions and above to upload arbitrary files onto the server which can be used to execute code on the server.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
King-Theme Page_Builder_King_Composer
cpe:2.3:a:king-theme:page_builder_king_composer:*:*:*:*:*:wordpress:*:*
|
— |
<= 2.9.3
|
References 4
https://blog.nintechnet.com/wordpress-kingcomposer-page-builder-fixed-multiple-…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&ol…
security@wordfence.com
https://wordpress.org/plugins/kingcomposer/#developers
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/45a62dd0-386c-41b3-b8…
security@wordfence.com