CVE-2024-43337 in Popup Builder Plugin
Summary
by MITRE • 08/27/2024
Cross-Site Request Forgery (CSRF) vulnerability in Brave Brave Popup Builder.This issue affects Brave Popup Builder: from n/a through 0.7.0.
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Analysis
by VulDB Data Team • 03/12/2025
The CVE-2024-43337 vulnerability represents a critical cross-site request forgery flaw within the Brave Popup Builder plugin, a widely used tool for creating and managing popups on websites. This vulnerability exists in versions ranging from the initial release through version 0.7.0, indicating a prolonged period during which the security weakness remained unaddressed. The issue stems from the plugin's failure to implement proper anti-CSRF mechanisms, leaving websites that utilize this popup builder susceptible to malicious attacks that can manipulate user sessions and perform unauthorized actions.
The technical implementation of this CSRF vulnerability allows attackers to exploit the absence of anti-CSRF tokens in the plugin's form submissions and API endpoints. When users visit compromised websites or click on malicious links, attackers can trick authenticated users into performing unintended actions within the context of their active sessions. This flaw specifically affects the popup builder's administrative functions and user interaction elements, potentially enabling unauthorized modifications to popup configurations, content injection, or even complete administrative takeover of affected websites. The vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery weaknesses in web applications.
The operational impact of this vulnerability extends beyond simple data manipulation, as it can enable attackers to execute arbitrary code within the context of the affected website. This capability allows for persistent malicious activities including but not limited to data exfiltration, website defacement, session hijacking, and the installation of backdoors. The attack surface is particularly concerning given that the Brave Popup Builder plugin is designed for easy integration and use, making it a common target for exploitation. The vulnerability can be leveraged to perform actions such as creating new administrator accounts, modifying existing popup configurations, or injecting malicious scripts into popup content, thereby compromising the integrity and security of the entire website.
Organizations utilizing the Brave Popup Builder plugin must implement immediate remediation measures to address this vulnerability. The primary mitigation strategy involves updating to the latest version of the plugin where the CSRF protection mechanisms have been properly implemented. Security administrators should also consider implementing additional protective measures such as web application firewalls, monitoring for suspicious API calls, and regular security audits of plugin configurations. The vulnerability demonstrates the critical importance of implementing proper session management and authentication controls in web applications, particularly in plugins that handle administrative functions. According to ATT&CK framework, this vulnerability maps to T1566.001 (Phishing: Spearphishing Attachment) and T1071.001 (Application Layer Protocol: Web Protocols) as attackers can leverage this weakness to establish persistent access and execute malicious web-based activities. Regular security assessments and patch management protocols are essential to prevent exploitation of similar vulnerabilities in the future, as CSRF attacks continue to represent one of the most prevalent and dangerous web application security threats.