CVE-2022-40311 in Fatcat Apps Analytics Cat Plugin
Summary
by MITRE • 10/21/2022
Auth. (admin+) Stored Cross-Site Scripting (XSS) in Fatcat Apps Analytics Cat plugin <= 1.0.9 on WordPress.
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Analysis
by VulDB Data Team • 10/21/2022
The vulnerability identified as CVE-2022-40311 represents a critical security flaw within the Fatcat Apps Analytics Cat plugin for WordPress systems. This issue affects versions 1.0.9 and earlier, where authenticated users with administrator privileges or higher can exploit a stored cross-site scripting vulnerability. The flaw occurs within the plugin's handling of user input, specifically when processing data that gets stored and subsequently rendered back to users without proper sanitization or output encoding mechanisms.
The technical nature of this vulnerability stems from insufficient input validation and output escaping within the plugin's backend processing. When administrators or privileged users interact with the analytics plugin interface, malicious payloads can be injected into fields that are then stored in the WordPress database. These stored payloads execute whenever other users access the affected pages, making this a persistent threat that can affect multiple users over time. The vulnerability operates under CWE-79 which specifically addresses cross-site scripting flaws, and aligns with ATT&CK technique T1566.001 related to spearphishing attachments that can lead to privilege escalation through web application exploitation.
The operational impact of this vulnerability extends beyond simple script execution, as it enables attackers with administrative access to potentially escalate privileges, exfiltrate sensitive data, or manipulate the WordPress installation's functionality. The stored nature of the XSS means that the malicious code persists in the database and executes automatically when affected pages are accessed, making detection more challenging and the attack surface broader than typical reflected XSS vulnerabilities. This vulnerability could allow unauthorized parties to execute arbitrary JavaScript in the context of the victim's browser, potentially leading to session hijacking, data theft, or full system compromise if the administrator's privileges are leveraged effectively.
Mitigation strategies for CVE-2022-40311 primarily focus on immediate plugin updates to versions that address the stored XSS vulnerability. Organizations should implement comprehensive patch management procedures to ensure all WordPress plugins remain current with security updates. Additionally, network monitoring should be enhanced to detect unusual data injection patterns, and input validation should be strengthened at multiple layers including application firewalls, database input sanitization, and output encoding. The principle of least privilege should be enforced to limit the scope of potential exploitation, and regular security audits should be conducted to identify similar vulnerabilities in other plugins or themes. Implementing Content Security Policy headers can provide additional protection against script execution, while regular backups ensure rapid recovery from potential compromise scenarios. The vulnerability demonstrates the critical importance of maintaining up-to-date third-party components in web applications and highlights the necessity of thorough security testing for all plugin installations.