CVE-2022-2365 in trilium
Summary
by MITRE • 07/11/2022
stored XSS
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Analysis
by VulDB Data Team • 07/21/2022
The vulnerability identified as CVE-2022-2365 represents a stored cross-site scripting flaw that poses significant risks to web application security and user data integrity. This type of vulnerability occurs when malicious scripts are stored on a server and then executed in the context of other users' browsers when they access the affected application. The flaw typically manifests in web applications where user input is not properly sanitized or validated before being stored in databases or other persistent storage mechanisms.
The technical implementation of this stored XSS vulnerability stems from inadequate input validation and output encoding practices within the application's data handling processes. Attackers can inject malicious JavaScript code through forms, comment sections, user profiles, or any input field that accepts user-generated content. When this content is subsequently retrieved and displayed to other users without proper sanitization, the injected scripts execute in their browsers, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws, and aligns with ATT&CK technique T1531 which focuses on credential access through malicious code injection.
The operational impact of CVE-2022-2365 extends beyond simple data corruption, as it enables attackers to establish persistent footholds within affected systems. Once executed, malicious scripts can harvest cookies, session tokens, and other sensitive information from users' browsers, potentially allowing attackers to impersonate legitimate users and gain unauthorized access to protected resources. The stored nature of this vulnerability means that the malicious code remains active until manually removed from the server, creating a long-term threat vector that can affect multiple users over extended periods. This persistent threat is particularly concerning for applications handling sensitive data or providing privileged access to systems.
Mitigation strategies for CVE-2022-2365 must address both immediate remediation and long-term security architecture improvements. Organizations should implement comprehensive input validation mechanisms that sanitize all user-provided data before storage, utilizing allow-list validation approaches rather than deny-list methods. Output encoding should be applied consistently across all user-generated content displayed in web interfaces, ensuring that any potentially malicious scripts are rendered harmless. Security headers including Content Security Policy should be implemented to restrict script execution and prevent unauthorized code injection. Additionally, regular security testing including automated scanning and manual penetration testing should be conducted to identify and remediate similar vulnerabilities. The remediation process should follow established security frameworks such as OWASP Top 10 guidelines and NIST cybersecurity standards to ensure comprehensive protection against this and related threats.