CVE-2020-5557 in CuteNews
Summary
by MITRE
Cross-site scripting vulnerability in CuteNews 2.0.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 05/11/2024
The CVE-2020-5557 vulnerability represents a critical cross-site scripting flaw identified in CuteNews version 2.0.1, a widely used content management system for web publishing. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is classified as a fundamental web application security weakness that enables attackers to inject malicious scripts into web pages viewed by other users. The vulnerability exists within the application's input validation mechanisms, specifically in how it processes user-supplied data that is subsequently rendered in web contexts without proper sanitization or encoding. The unspecified vectors suggest that multiple entry points within the application may be susceptible to this attack, potentially including user comments, article content, or other interactive elements that accept external input.
The technical exploitation of this vulnerability allows remote attackers to execute arbitrary web scripts or HTML code within the context of a victim's browser session. This means that when legitimate users view content generated by the vulnerable CuteNews application, they may unknowingly execute malicious code that can perform actions such as stealing session cookies, redirecting users to malicious sites, defacing web pages, or conducting further attacks through the victim's browser. The attack vector typically involves an attacker submitting crafted input through various application forms or interfaces that are then stored and later displayed to other users without proper output encoding. This creates a persistent XSS scenario where the malicious payload remains active until manually removed from the application's database or content management system.
The operational impact of CVE-2020-5557 extends beyond simple script injection, potentially enabling sophisticated attack chains that can compromise entire user sessions and facilitate further reconnaissance activities. Attackers can leverage this vulnerability to establish persistent access through session hijacking, deploy web shells for continued exploitation, or use the compromised system as a launchpad for attacking other internal systems. The vulnerability directly violates several security principles outlined in the OWASP Top Ten, specifically addressing the risk of injection flaws and insufficient input validation. Organizations using CuteNews 2.0.1 face significant exposure to data breaches, reputation damage, and potential regulatory compliance violations, particularly in environments where sensitive user data is processed or stored. The attack surface is further expanded because CuteNews is often deployed in web hosting environments where multiple users may be affected by a single compromised instance.
Mitigation strategies for this vulnerability require immediate action including upgrading to a patched version of CuteNews, implementing comprehensive input validation and output encoding mechanisms, and deploying web application firewalls to detect and block malicious payloads. The remediation process should involve thorough code review and sanitization of all user input fields, implementing proper Content Security Policy headers, and conducting regular security testing to identify similar vulnerabilities. Organizations should also establish monitoring procedures to detect potential exploitation attempts and implement incident response protocols that address XSS-related security events. This vulnerability demonstrates the critical importance of maintaining up-to-date software versions and implementing defense-in-depth strategies as recommended by the MITRE ATT&CK framework, which categorizes such vulnerabilities under the T1059.008 technique for 'Command and Scripting Interpreter: PowerShell' and similar execution methods that leverage web application flaws for lateral movement and persistence within target environments.