Description
WordPress Plugin Work The Flow File Upload is prone to a vulnerability that lets attackers upload arbitrary files. The issue occurs because the application fails to adequately sanitize user-supplied input. An attacker can exploit this vulnerability to upload arbitrary code and run it in the context of the webserver process. This may facilitate unauthorized access or privilege escalation; other attacks are also possible. WordPress Plugin Work The Flow File Upload version 2.3.1 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 2.4.0 or latest
References
http://www.exploit-db.com/exploits/33003/
http://packetstormsecurity.com/files/126333/WordPress-Work-The-Flow-1.2.1-Shell-Upload.html