CVE-2009-2020 in Virtue News Manager
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in news_detail.php in Virtue News Manager allows remote attackers to inject arbitrary web script or HTML via the nid parameter.
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Analysis
by VulDB Data Team • 12/01/2024
The vulnerability identified as CVE-2009-2020 represents a classic cross-site scripting flaw within the Virtue News Manager web application, specifically affecting the news_detail.php component. This issue arises from inadequate input validation and output sanitization practices that fail to properly handle user-supplied data. The vulnerability is particularly concerning as it operates through the nid parameter, which serves as a critical identifier for news articles within the application's URL structure. Attackers can exploit this weakness by crafting malicious URLs containing script code within the nid parameter, thereby enabling unauthorized execution of arbitrary web scripts or HTML content in the context of affected users' browsers.
The technical implementation of this XSS vulnerability stems from the application's failure to properly sanitize or encode user input before processing and displaying it within web pages. When the news_detail.php script receives the nid parameter, it directly incorporates this value into the page output without sufficient validation or encoding mechanisms. This creates an environment where malicious payloads can be executed in the victim's browser context, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and demonstrates the critical importance of proper input validation and output encoding practices.
The operational impact of this vulnerability extends beyond simple script injection, as it can facilitate more sophisticated attacks within the target environment. An attacker could leverage this vulnerability to steal session cookies, modify page content, redirect users to phishing sites, or even execute malicious code that could compromise the entire user session. The remote nature of this attack means that exploitation does not require physical access to the system or any special privileges beyond the ability to craft malicious URLs. This vulnerability affects all users who interact with the Virtue News Manager application, particularly those who may inadvertently click on compromised links or visit malicious websites that exploit this flaw. The attack vector is straightforward and can be automated, making it particularly dangerous in environments where users frequently click on links or visit untrusted websites.
Security mitigation strategies for this vulnerability must focus on implementing robust input validation and output encoding mechanisms throughout the application. The most effective remediation involves sanitizing all user-supplied input, particularly parameters like nid, through proper encoding techniques such as HTML entity encoding before rendering content. Additionally, implementing Content Security Policy (CSP) headers can provide an additional layer of protection by restricting the sources from which scripts can be executed within the application. Organizations should also consider implementing proper input validation routines that reject or sanitize potentially malicious content before it can be processed by the application. This vulnerability highlights the fundamental principle that all user input must be treated as untrusted and properly validated before being incorporated into application output, a core tenet of secure software development practices. The remediation approach should align with ATT&CK technique T1059.007 for command and scripting interpreter, as it addresses the root cause of script execution through improper input handling rather than attempting to detect or block specific malicious payloads after the fact.