Description
WordPress Plugin Backup and Restore WordPress-WPBackItUp is prone to a vulnerability that lets attackers delete arbitrary files because the application fails to properly verify user-supplied input. An attacker can exploit this vulnerability to delete arbitrary files in the context of the webserver process. WordPress Plugin Backup and Restore WordPress-WPBackItUp version 1.15.3 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.15.4 or latest
References
http://lenonleite.com.br/en/publish-exploits/plugin-wpbackitup-backup-1-15-3-rce-unlink/
https://plugins.svn.wordpress.org/wp-backitup/trunk/readme.txt
Related Vulnerabilities
WordPress Plugin Category and Page Icons Cross-Site Scripting (0.9.2)
PHP Numeric Errors Vulnerability (CVE-2016-4344)
Jenkins Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2017-2613)
phpMyAdmin Improper Input Validation Vulnerability (CVE-2016-2562)
WordPress Plugin YITH Maintenance Mode Cross-Site Scripting (1.3.7)