CVE-2022-35151 in kkFileView
Summary
by MITRE • 08/18/2022
kkFileView v4.1.0 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities via the urls and currentUrl parameters at /controller/OnlinePreviewController.java.
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Analysis
by VulDB Data Team • 09/17/2022
The kkFileView application version 4.1.0 contains critical cross-site scripting vulnerabilities that pose significant security risks to organizations relying on this document preview system. These vulnerabilities exist within the OnlinePreviewController.java component where user-supplied input is not properly sanitized before being rendered in web responses. The specific attack vectors involve the urls and currentUrl parameters which are directly processed without adequate input validation or output encoding mechanisms.
This vulnerability classification aligns with CWE-79 which defines cross-site scripting as a weakness where an application incorporates untrusted data into web pages without proper validation or encoding. The flaw enables attackers to inject malicious scripts that execute in the context of victim browsers, potentially leading to session hijacking, data theft, or unauthorized actions within the application. The vulnerability affects the core preview functionality where documents are displayed through web interfaces, making it particularly dangerous for environments handling sensitive corporate or personal documents.
The operational impact of this vulnerability extends beyond simple script execution as it can enable sophisticated attack chains. An attacker could craft malicious URLs containing XSS payloads that, when visited by authenticated users, would execute in their browser context. This could result in theft of session cookies, redirection to malicious sites, or modification of application behavior. The vulnerability is particularly concerning because it affects the preview functionality that users might access frequently, increasing the attack surface and potential exposure. According to ATT&CK framework, this represents a technique categorized under T1566 - Phishing and T1203 - Exploitation for Client Execution, where attackers leverage web-based vulnerabilities to compromise user systems.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The primary fix involves sanitizing all user-supplied parameters including urls and currentUrl before processing them in the OnlinePreviewController.java. Organizations should implement Content Security Policy headers to limit script execution and employ proper HTML encoding for all dynamic content. Additionally, input validation should be strengthened to reject or sanitize potentially malicious characters and patterns. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components. The fix should align with OWASP Top Ten security practices and follow secure coding guidelines to prevent similar issues in future development cycles.