Is Backuply safe? Known vulnerabilities and latest version

The Backuply – Backup, Restore, Migrate and Clone plugin for WordPress is vulnerable to SQL Injection via the Biographical Info field (second-order, via restore) in all versions up to, and including, 1.5.8 due to insufficient escaping on the user supplied parameter and the lack of sufficient preparation on an existing SQL query. Backuply exports the Biographical Info value verbatim inside an INSERT statement written to the backup's SQL dump (wp_usermeta). When an Administrator later restores such a backup, the crafted payload breaks out of that INSERT statement and appends attacker-controlled SQL that executes with full database privileges. This makes it possible for authenticated attackers, with subscriber-level access and above, to write arbitrary data to the database — in particular to update the default_role option in wp_options to administrator (and enable open user registration) — so that a subsequently registered account is automatically granted the Administrator role, resulting in privilege escalation and full site takeover. Because the injection executes inside an INSERT during restore with no response returned to the attacker, the primitive is used to modify database records rather than to read existing data directly.

The Backuply – Backup, Restore, Migrate and Clone plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete backup functionality in all versions up to, and including, 1.4.8. This makes it possible for authenticated attackers, with Administrator-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php).

The Backuply – Backup, Restore, Migrate and Clone plugin for WordPress is vulnerable to SQL Injection via the 'options' parameter passed to the backuply_wp_clone_sql() function in all versions up to, and including, 1.3.4 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The Backuply – Backup, Restore, Migrate and Clone plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 1.2.7 via the backup_name parameter in the backuply_download_backup function. This makes it possible for attackers to have an account with only activate_plugins capability to access arbitrary files on the server, which can contain sensitive information. This only impacts sites hosted on Windows servers.

The Backuply – Backup, Restore, Migrate and Clone plugin for WordPress is vulnerable to Denial of Service in all versions up to, and including, 1.2.6. This is due to direct access of the backuply/restore_ins.php file and. This makes it possible for unauthenticated attackers to make excessive requests that result in the server running out of resources.

The Backuply – Backup, Restore, Migrate and Clone plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 1.2.3 via the node_id parameter in the backuply_get_jstree function. This makes it possible for attackers with administrator privileges or higher to read the contents of arbitrary files on the server, which can contain sensitive information.