SB2020042333 - Multiple vulnerabilities in MapPress Maps for WordPress plugin

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Stored cross-site scripting (CVE-ID: CVE-2020-12077)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data on AJAX actions that called functions lacking capability checks and nonce checks. A remote authenticated attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website, leads to map deletion and creation.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks. 

This vulnerability affects the following AJAX hooks:

add_action('wp_ajax_mapp_delete', array(__CLASS__, 'ajax_delete'));
add_action('wp_ajax_mapp_save', array(__CLASS__, 'ajax_save'));

2) Arbitrary file upload (CVE-ID: CVE-2020-12077)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to the affected plugin registers several AJAX actions that calls functions without capability checks or nonce checks. A remote authenticated attacker can send a specially crafted "$_POST" request to "wp-admin/admin-ajax.php" and upload and execute arbitrary file on the server.

Successful exploitation of this vulnerability allows a remote attacker to cause arbitrary File Upload, Deletion, and Disclosure Leading to RCE or Site Reset.

This vulnerability affects the following AJAX hooks:

add_action('wp_ajax_mapp_tpl_get', array(__CLASS__, 'ajax_get')); 

add_action('wp_ajax_mapp_tpl_save', array(__CLASS__, 'ajax_save')); 

add_action('wp_ajax_mapp_tpl_delete', array(__CLASS__, 'ajax_delete'));

Remediation

Install update from vendor's website.

References

• https://wordpress.org/plugins/mappress-google-maps-for-wordpress/#developers
• https://wpvulndb.com/vulnerabilities/10187/
• https://www.wordfence.com/blog/2020/04/critical-vulnerabilities-patched-in-mappress-maps-plugin/