CVE-2022-40687 in Creative Mail Plugin
Summary
by MITRE • 11/18/2022
Cross-Site Request Forgery (CSRF) vulnerability in Creative Mail plugin <= 1.5.4 on WordPress.
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Analysis
by VulDB Data Team • 12/20/2022
The CVE-2022-40687 vulnerability represents a critical cross-site request forgery flaw discovered in the Creative Mail plugin for WordPress systems. This vulnerability affects versions 1.5.4 and earlier, making numerous WordPress installations susceptible to unauthorized administrative actions. The issue stems from the plugin's failure to implement proper CSRF protection mechanisms, allowing attackers to exploit the lack of validation tokens in critical administrative functions. The vulnerability exists within the plugin's handling of administrative requests where user authentication is not sufficiently verified through anti-CSRF measures.
The technical implementation of this vulnerability occurs when the Creative Mail plugin processes administrative actions without validating the presence of a valid CSRF token or implementing proper request origin verification. Attackers can craft malicious requests that appear to originate from authenticated users, leveraging the trust relationship between the WordPress admin interface and the Creative Mail plugin. This flaw specifically impacts the plugin's administrative endpoints that handle configuration changes, user management, and content modifications. The absence of anti-CSRF tokens means that any authenticated user session can be exploited to perform unauthorized administrative actions, effectively granting attackers the ability to manipulate plugin settings and potentially compromise the entire WordPress installation.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it can lead to complete compromise of WordPress installations. An attacker who successfully exploits this CSRF vulnerability can modify plugin configurations, inject malicious content, or potentially gain access to sensitive user data. The vulnerability is particularly dangerous because it allows attackers to perform administrative actions without requiring additional authentication credentials beyond an existing valid session. This makes the attack surface particularly wide, as any user with access to the WordPress admin area could become a vector for exploitation. The vulnerability also aligns with common attack patterns documented in the attack tree methodology, where attackers can leverage existing session tokens to execute unauthorized administrative commands.
Security mitigation strategies for this vulnerability include immediate plugin updates to version 1.5.5 or later, which contain the necessary CSRF protection patches. Organizations should also implement additional security measures such as monitoring for unauthorized administrative changes and ensuring that all WordPress plugins are regularly updated. The vulnerability demonstrates the importance of implementing proper input validation and anti-CSRF token mechanisms in web applications, as outlined in the CWE 352 category for Cross-Site Request Forgery. Security teams should also consider implementing web application firewalls and additional monitoring controls to detect suspicious administrative activity patterns that may indicate CSRF exploitation attempts. The ATT&CK framework categorizes this vulnerability under the privilege escalation and persistence tactics, where attackers can use such flaws to maintain long-term access to compromised systems. Organizations should conduct comprehensive vulnerability assessments to identify other plugins that may contain similar CSRF vulnerabilities and ensure that all administrative endpoints implement proper authentication verification mechanisms.