CVE-2024-22492 in JFinalcms
Summary
by MITRE • 01/12/2024
A stored XSS vulnerability exists in JFinalcms 5.0.0 via the /gusetbook/save contact parameter, which allows remote attackers to inject arbitrary web script or HTML.
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Analysis
by VulDB Data Team • 02/02/2024
The stored cross-site scripting vulnerability identified as CVE-2024-22492 affects JFinalcms version 5.0.0 and represents a critical security flaw that enables remote attackers to execute malicious scripts within the context of affected user sessions. This vulnerability specifically manifests through the /gusetbook/save endpoint where the contact parameter fails to properly sanitize user input, creating an opportunity for attackers to inject persistent malicious code that can be executed whenever the affected application displays the stored data.
The technical implementation of this flaw stems from inadequate input validation and output encoding mechanisms within the guestbook submission functionality. When users submit contact information through the guestbook form, the application stores the input directly into its database without sufficient sanitization or encoding processes. This stored data is then later retrieved and displayed in subsequent page renders without proper context-aware encoding, allowing malicious scripts to execute in the browsers of unsuspecting users who view the affected content. The vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws, and aligns with ATT&CK technique T1566.001 for credential access through spearphishing attachments or links.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the capability to steal user sessions, redirect victims to malicious sites, perform actions on behalf of authenticated users, and potentially escalate privileges within the application environment. Attackers could leverage this flaw to create persistent backdoors, harvest sensitive information from authenticated sessions, or use the compromised application as a launch point for further attacks within the network. The stored nature of the vulnerability means that once exploited, the malicious payload remains active until manually removed from the database, potentially affecting multiple users over extended periods.
Organizations utilizing JFinalcms 5.0.0 should immediately implement comprehensive input validation and output encoding measures to address this vulnerability. The recommended mitigations include implementing strict sanitization of all user-supplied data before storage, employing context-appropriate encoding mechanisms when rendering user content, and applying proper parameter validation at the application level. Additionally, security patches should be applied promptly if available from the vendor, and network monitoring should be enhanced to detect potential exploitation attempts. Regular security assessments and input validation testing should be conducted to identify similar vulnerabilities in other application components, as this flaw demonstrates the critical importance of maintaining robust data sanitization practices throughout web application development lifecycle.