CVE-2025-22732 in Ad Blocking Detector Plugin
Summary
by MITRE • 01/21/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Admiral Ad Blocking Detector allows Stored XSS. This issue affects Ad Blocking Detector: from n/a through 3.6.0.
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Analysis
by VulDB Data Team • 02/09/2025
The vulnerability identified as CVE-2025-22732 represents a critical cross-site scripting weakness within the Admiral Ad Blocking Detector software suite, specifically manifesting as a stored XSS flaw that enables attackers to inject malicious scripts into web pages that are subsequently executed by other users. This vulnerability falls under the well-documented CWE-79 category of Cross-site Scripting, which occurs when web applications fail to properly sanitize user input before incorporating it into dynamically generated web content. The affected version range spans from an unknown initial version through 3.6.0, indicating that the flaw has been present for an extended period and potentially affects a substantial user base. The issue arises during the web page generation process where input validation mechanisms are insufficient to prevent malicious code from being stored and subsequently executed when legitimate users access affected pages.
The technical exploitation of this vulnerability occurs through the improper neutralization of input data that flows into the web application's output generation pipeline. When users interact with the ad blocking detector interface or submit content that gets processed by the application, the system fails to adequately sanitize or escape potentially malicious input before rendering it within HTML output. This allows attackers to inject script payloads that are then executed in the context of other users' browsers, enabling a range of malicious activities including session hijacking, credential theft, and data exfiltration. The stored nature of this XSS vulnerability means that the malicious scripts are persisted on the server and executed whenever affected pages are accessed, making it particularly dangerous as it can affect multiple users over time without requiring repeated exploitation attempts. The vulnerability directly impacts the application's security posture by undermining the principle of least privilege and user trust in the web interface.
The operational impact of this vulnerability extends beyond simple script execution to encompass significant security risks that could compromise user data and system integrity. Attackers leveraging this stored XSS flaw could potentially steal user sessions, redirect victims to malicious websites, modify web page content, or harvest sensitive information from authenticated users. The attack surface is particularly concerning given that ad blocking detectors are typically installed in user environments where they have access to browsing data and potentially sensitive network information. This vulnerability creates a persistent threat vector that could be exploited to establish long-term footholds within user networks, especially if the ad blocking detector is deployed in enterprise environments where users may have elevated privileges or access to sensitive corporate data. The potential for this vulnerability to be combined with other attack vectors makes it particularly dangerous in real-world scenarios.
Mitigation strategies for CVE-2025-22732 must address both immediate remediation and long-term security improvements to prevent similar vulnerabilities from emerging in the future. The primary recommendation involves implementing robust input validation and output encoding mechanisms throughout the application's codebase, particularly in areas where user-generated content is processed and displayed. Security patches should be applied immediately to update the Ad Blocking Detector to versions that contain proper XSS prevention measures, including the implementation of Content Security Policy headers, proper HTML escaping of dynamic content, and comprehensive input sanitization routines. Organizations should also consider implementing web application firewalls to detect and block suspicious script injection attempts, while conducting thorough security assessments to identify other potential XSS vulnerabilities within the application. The remediation process should align with industry best practices outlined in the OWASP Top Ten and ATT&CK framework, specifically addressing techniques related to command injection and script injection attacks. Additionally, regular security training for developers on secure coding practices and input validation methodologies is essential to prevent recurrence of similar vulnerabilities in future releases.