CVE-2022-0134 in AnyComment Plugin
Summary
by MITRE • 02/21/2022
The AnyComment WordPress plugin before 0.2.18 does not have CSRF checks in the Import and Revert HyperComments features, allowing attackers to make logged in admin perform such actions via a CSRF attack
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Analysis
by VulDB Data Team • 02/25/2022
The AnyComment WordPress plugin vulnerability CVE-2022-0134 represents a critical cross-site request forgery weakness that affects versions prior to 0.2.18. This flaw specifically impacts the plugin's Import and Revert HyperComments functionalities, where proper CSRF protection mechanisms are absent. The vulnerability exists within the WordPress ecosystem where administrative users maintain elevated privileges and can execute significant system modifications. Attackers can exploit this weakness by crafting malicious web pages or email attachments that, when visited by an authenticated administrator, automatically submit requests to the vulnerable plugin endpoints. The absence of CSRF tokens or validation mechanisms in these particular features creates an attack surface where malicious actors can manipulate administrative workflows without requiring authentication credentials. This vulnerability directly violates the principle of least privilege and demonstrates poor input validation practices within the plugin's security architecture.
The technical implementation of this vulnerability stems from the plugin's failure to implement proper CSRF protection measures in its administrative interfaces. When administrators access the Import and Revert HyperComments features, the plugin should validate that requests originate from legitimate administrative sessions through the use of anti-CSRF tokens. However, these validation mechanisms are completely missing, allowing any web page to submit requests to the plugin's administrative endpoints. The attack vector typically involves tricking an authenticated administrator into visiting a malicious website that contains embedded requests to the vulnerable plugin. This type of attack falls under the CWE-352 category for Cross-Site Request Forgery, where the application fails to verify the authenticity of requests originating from the same origin. The vulnerability is particularly dangerous because it operates within the administrative context, providing attackers with the ability to manipulate comments and potentially access sensitive data or modify website content.
The operational impact of this vulnerability extends beyond simple data manipulation to potentially compromise the entire WordPress installation's integrity. Administrators who perform import operations may inadvertently overwrite existing comment data or introduce malicious comment structures that could affect website performance or security. The revert functionality presents additional risks as it allows attackers to undo legitimate comment modifications, potentially obscuring audit trails or removing security-related comment entries. When combined with other vulnerabilities or attack vectors, this CSRF weakness could enable more sophisticated attacks such as comment-based data exfiltration or the injection of malicious code through comment systems. The vulnerability also affects the principle of auditability within the WordPress environment, as administrators cannot reliably determine whether comment modifications were performed by legitimate users or malicious actors exploiting this CSRF flaw.
Mitigation strategies for CVE-2022-0134 require immediate action including upgrading to AnyComment plugin version 0.2.18 or later, which implements proper CSRF protection mechanisms. Organizations should also implement additional security layers such as role-based access controls that limit administrative privileges to essential personnel only, and deploy web application firewalls that can detect and block suspicious request patterns. Network segmentation and monitoring solutions should be configured to detect unusual administrative activities that might indicate CSRF attacks. Security teams should also conduct regular vulnerability assessments to identify similar CSRF vulnerabilities in other plugins and themes. The implementation of Content Security Policy headers can provide additional protection against cross-site scripting attacks that might complement CSRF defenses. According to ATT&CK framework, this vulnerability maps to T1566 for Phishing and T1071 for Application Layer Protocol, as attackers leverage social engineering techniques to deliver malicious payloads that exploit the CSRF weakness. Regular security training for administrators about recognizing phishing attempts and suspicious website content can significantly reduce the risk of successful exploitation. The vulnerability also highlights the importance of maintaining current security practices in WordPress plugin management, as outdated plugins represent common attack vectors for cybercriminals targeting content management systems.