CVE-2022-40408 in FeehiCMS
Summary
by MITRE • 09/29/2022
FeehiCMS v2.1.1 was discovered to contain a cross-site scripting (XSS) vulnerability via a crafted payload injected into the Comment box under the Single Page module.
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Analysis
by VulDB Data Team • 10/26/2022
The vulnerability identified as CVE-2022-40408 affects FeehiCMS version 2.1.1 and represents a critical cross-site scripting flaw that resides within the Single Page module of the content management system. This issue arises from inadequate input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before it is rendered back to other users within the application interface. The vulnerability specifically manifests when malicious payloads are injected into the Comment box field, which then gets processed and displayed without proper security controls.
The technical exploitation of this XSS vulnerability occurs through the manipulation of the comment submission functionality where an attacker can craft malicious scripts that execute in the context of other users who view the affected content. This type of vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws, and represents a classic example of reflected XSS where the malicious payload is reflected back to users through the application's response. The vulnerability exists due to insufficient sanitization of user inputs in the comment handling mechanism, allowing attackers to inject malicious JavaScript code that executes when other users browse the affected pages.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it provides attackers with the capability to hijack user sessions, steal sensitive information, or redirect users to malicious websites. When users interact with the compromised comment section, their browsers execute the injected scripts, potentially leading to session hijacking, credential theft, or the execution of arbitrary commands on affected systems. The vulnerability affects all users of the FeehiCMS platform who have access to the Single Page module and comment functionality, making it particularly dangerous in environments where multiple users interact with shared content management systems.
Security mitigation strategies for this vulnerability should include immediate implementation of proper input validation and output encoding mechanisms that sanitize all user-supplied data before it is stored or displayed. The recommended approach involves applying context-specific escaping techniques for HTML, JavaScript, and URL contexts, as well as implementing Content Security Policy headers to prevent unauthorized script execution. Organizations should also consider implementing web application firewalls to detect and block malicious payloads, while ensuring that all user inputs undergo rigorous sanitization before being processed by the application. Additionally, regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other parts of the application, and all systems should be updated to the latest patched versions of FeehiCMS to prevent exploitation of this and related vulnerabilities.