CVE-2020-25474 in News Script PHP Pro
Summary
by MITRE • 11/25/2020
SimplePHPscripts News Script PHP Pro 2.3 is affected by a Cross Site Scripting (XSS) vulnerability via the editor_name parameter.
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Analysis
by VulDB Data Team • 12/10/2020
The vulnerability identified as CVE-2020-25474 affects SimplePHPscripts News Script PHP Pro version 2.3 and represents a critical cross site scripting flaw that enables malicious actors to inject arbitrary JavaScript code into web applications. This vulnerability specifically manifests through the editor_name parameter, which fails to properly sanitize user input before processing and displaying it within the application's web interface. The flaw resides in the application's input validation mechanisms, where unfiltered data enters the system and subsequently gets rendered without appropriate encoding or filtering, creating an environment where attackers can execute malicious scripts in the context of other users' browsers.
The technical implementation of this XSS vulnerability stems from the application's failure to implement proper output encoding and input sanitization controls. When the editor_name parameter is submitted through web forms or API endpoints, the system does not adequately validate or escape special characters that could be interpreted as HTML or JavaScript code. This weakness allows attackers to craft malicious payloads that, when executed, can steal session cookies, redirect users to malicious websites, or perform unauthorized actions on behalf of authenticated users. The vulnerability maps to CWE-79 which specifically addresses cross site scripting flaws in web applications, where insufficient input validation and output encoding creates opportunities for attackers to inject malicious code.
From an operational perspective, this vulnerability poses significant risks to the security posture of affected systems and their users. Attackers can exploit this flaw to establish persistent access to the application through session hijacking, steal sensitive user credentials, or manipulate content displayed to other users. The impact extends beyond simple data theft as the vulnerability could enable privilege escalation attacks if the affected application handles administrative functions. The attack surface is particularly concerning given that news scripts often contain user-generated content and administrative interfaces that require elevated privileges, making this vulnerability a prime target for exploitation. According to ATT&CK framework, this vulnerability aligns with T1059.007 which covers scripting languages and T1566.001 which covers spearphishing attachments, as attackers can leverage XSS to deliver malicious payloads through compromised web interfaces.
The mitigation strategies for CVE-2020-25474 should prioritize immediate implementation of proper input validation and output encoding mechanisms. Organizations should implement comprehensive parameter validation that filters out or escapes potentially dangerous characters including angle brackets, quotes, and script tags before processing user input. The application should employ context-appropriate output encoding for all dynamic content, particularly when rendering user-supplied data in web pages. Additionally, implementing a content security policy that restricts script execution and using secure coding practices such as prepared statements and parameterized queries can significantly reduce the risk of exploitation. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities throughout the application codebase, with particular attention to areas where user input is processed and displayed. The most effective remediation involves upgrading to the latest version of the SimplePHPscripts News Script PHP Pro that contains proper XSS protection mechanisms and input sanitization controls, as recommended by the vendor's security advisories.