CVE-2022-33113 in Jfinal
Summary
by MITRE • 06/23/2022
Jfinal CMS v5.1.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the keyword text field under the publish blog module.
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Analysis
by VulDB Data Team • 07/14/2022
The vulnerability identified as CVE-2022-33113 affects Jfinal CMS version 5.1.0 and represents a critical cross-site scripting vulnerability within the publish blog module. This flaw exists due to insufficient input validation and sanitization mechanisms that fail to properly filter malicious content injected through the keyword text field. The vulnerability stems from the application's failure to implement proper output encoding and input validation controls, creating an exploitable entry point for attackers seeking to inject malicious scripts into the web application's content management interface.
The technical implementation of this vulnerability allows an attacker to craft a malicious payload containing JavaScript or HTML code that gets executed when the compromised content is rendered in the browser of any user who accesses the affected blog post. This occurs because the keyword field in the publish blog module does not properly sanitize user input, enabling attackers to inject script tags or other malicious code that gets stored and subsequently executed in the context of the victim's browser. The vulnerability directly maps to CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') and represents a classic server-side injection flaw that can be exploited through user-supplied content.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform session hijacking, steal user credentials, redirect victims to malicious sites, or even execute more sophisticated attacks such as clickjacking or CSRF exploitation. When combined with other vulnerabilities or used in conjunction with social engineering techniques, this XSS flaw can serve as a stepping stone for more comprehensive attacks against the affected web application and its users. The vulnerability affects the integrity and confidentiality of the content management system, potentially allowing attackers to manipulate published content, access sensitive user data, or compromise the overall security posture of the web application.
Security mitigations for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's codebase. The recommended approach includes implementing strict sanitization of all user-supplied input, particularly in fields that are later rendered in web pages, and applying proper HTML encoding to prevent script execution in the browser context. Organizations should also implement Content Security Policy headers to limit script execution and establish proper input validation routines that reject or sanitize potentially malicious content before it is processed or stored in the database. The mitigation strategies should align with ATT&CK technique T1059.007 - Command and Scripting Interpreter: JavaScript and follow OWASP Top Ten security practices for preventing cross-site scripting vulnerabilities in web applications.