CVE-2024-37493 in Posterity Plugin
Summary
by MITRE • 01/02/2025
Cross-Site Request Forgery (CSRF) vulnerability in SKT Themes Posterity allows Cross Site Request Forgery.This issue affects Posterity: from n/a through 3.3.
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Analysis
by VulDB Data Team • 02/16/2025
The CVE-2024-37493 vulnerability represents a critical Cross-Site Request Forgery weakness identified in the SKT Themes Posterity WordPress theme. This vulnerability stems from insufficient validation of request origins and lacks proper anti-CSRF token implementation within the theme's administrative interfaces. The flaw exists across all versions of the Posterity theme from the initial release through version 3.3, making it a persistent security risk for affected WordPress installations. The vulnerability allows attackers to execute unauthorized actions on behalf of authenticated users who visit malicious websites or have been compromised through social engineering tactics.
The technical exploitation of this CSRF vulnerability occurs when authenticated administrators interact with malicious web pages that trigger unintended actions within the Posterity theme's backend functionality. Attackers can craft specially designed requests that leverage the trust relationship between the victim's browser and the WordPress administration panel. These attacks typically involve manipulating the theme's settings, modifying content, or performing administrative operations without the user's knowledge or consent. The vulnerability's impact is amplified by the fact that it affects the core theme functionality, potentially allowing attackers to compromise entire WordPress installations through theme-based attacks.
From an operational standpoint, this vulnerability poses significant risks to WordPress sites utilizing the Posterity theme. The attack surface extends to any administrative functionality within the theme's interface, including but not limited to theme customization options, plugin integrations, and content management features. Security practitioners should note that successful exploitation could lead to complete compromise of affected sites, data manipulation, or the installation of malicious code. The vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery flaws in web applications. Additionally, this weakness can be leveraged as part of broader attack chains that follow ATT&CK tactic T1566, specifically the 'Phishing' technique, where attackers use social engineering to deliver malicious payloads that exploit CSRF vulnerabilities.
Organizations affected by this vulnerability should immediately implement mitigations including updating to the latest version of the Posterity theme if available, implementing proper CSRF token validation mechanisms, and establishing robust input validation controls. Security teams should also consider implementing Content Security Policy headers and monitoring for suspicious administrative activities. The vulnerability demonstrates the importance of proper session management and request origin verification in web applications, particularly within content management systems where theme developers may not implement comprehensive security controls. Regular security audits of WordPress themes and plugins remain essential for identifying similar weaknesses in third-party components that could be exploited by threat actors.