The Drag and Drop Multiple File Upload - Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'dnd_upload_cf7_upload' function in versions up to, and including, 1.3.7.3. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. This can be exploited if the form includes a multiple file upload field with ‘*’ as the accepted file type.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No 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)
References 4
https://plugins.trac.wordpress.org/browser/drag-and-drop-multiple-file-upload-c…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/drag-and-drop-multiple-file-upload-c…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3475121/drag-and-drop-multiple-fil…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/3205670c-5c3c-48c3-a3…
security@wordfence.com