CVE-2024-24849 in Quicksand Post Filter jQuery Plugin
Summary
by MITRE • 02/21/2024
Cross-Site Request Forgery (CSRF) vulnerability in Mark Stockton Quicksand Post Filter jQuery Plugin.This issue affects Quicksand Post Filter jQuery Plugin: from n/a through 3.1.1.
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Analysis
by VulDB Data Team • 02/29/2024
The Cross-Site Request Forgery vulnerability identified as CVE-2024-24849 resides within the Quicksand Post Filter jQuery Plugin, a widely utilized component for filtering and displaying WordPress content. This vulnerability represents a critical security flaw that allows attackers to execute unauthorized actions on behalf of authenticated users who visit malicious websites. The affected plugin versions range from the initial release through 3.1.1, indicating a substantial attack surface that could impact numerous WordPress installations. The vulnerability stems from the plugin's failure to implement proper CSRF protection mechanisms, specifically the absence of anti-forgery tokens or similar validation techniques that would prevent unauthorized requests from being processed.
The technical implementation of this CSRF flaw demonstrates a classic weakness in web application security where the plugin processes requests without verifying their origin or authenticity. Attackers can craft malicious web pages that, when visited by an authenticated WordPress user, automatically submit requests to the vulnerable plugin endpoints. This occurs because the plugin relies solely on the presence of HTTP headers or parameters that can be easily forged by attackers, without implementing robust validation checks such as token-based authentication or referer header verification. The vulnerability is particularly concerning as it operates at the application layer, leveraging the trust relationship between the user's browser and the WordPress installation. This flaw aligns with CWE-352, which specifically addresses Cross-Site Request Forgery vulnerabilities, and follows the patterns documented in the OWASP Top Ten as a critical web application security risk.
The operational impact of this vulnerability extends beyond simple data manipulation or theft, as it can enable attackers to perform administrative actions within the WordPress environment. An attacker could potentially modify or delete content, alter user permissions, or even install malicious plugins if they can leverage the CSRF vulnerability to execute privileged operations. The attack vector is particularly insidious because it requires no special privileges or advanced technical skills to exploit, making it accessible to a broad range of threat actors. This vulnerability could be exploited through various methods including social engineering campaigns where users are directed to malicious websites, or through compromised websites that embed the malicious code. The attack chain typically involves the attacker crafting a malicious page that automatically submits requests to the vulnerable plugin's endpoints, leveraging the authenticated session of the victim user. The implications for WordPress administrators are severe, as this vulnerability could lead to complete compromise of affected sites, particularly when combined with other exploitation techniques.
Mitigation strategies for this CSRF vulnerability must address both immediate remediation and long-term security enhancements. The most critical step involves updating the Quicksand Post Filter plugin to a version that includes proper CSRF protection mechanisms, typically through the implementation of unique anti-forgery tokens that are validated on each request. Administrators should also implement additional security measures such as Content Security Policy headers, which can help prevent unauthorized script execution, and ensure that all WordPress installations maintain current versions of plugins and themes. The remediation process should include thorough security auditing of all installed plugins to identify similar vulnerabilities, particularly those that handle user input or perform administrative actions. Organizations should also consider implementing Web Application Firewalls that can detect and block suspicious request patterns, and establish monitoring procedures to identify potential exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to T1566 (Phishing) and T1071.001 (Application Layer Protocol: Web Protocols) as attackers leverage web-based attack vectors to exploit the CSRF weakness. Additionally, proper input validation and output encoding practices should be implemented to further strengthen the defense-in-depth approach, ensuring that even if exploitation occurs, the impact is minimized through proper security controls.