CVE-2005-0485 in paNews
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in comment.php for paNews 2.0b4 for PHP Arena allows remote attackers to inject arbitrary HTML and web script via the showpost parameter.
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Analysis
by VulDB Data Team • 05/30/2019
The vulnerability identified as CVE-2005-0485 represents a classic cross-site scripting flaw within the paNews 2.0b4 content management system distributed by PHP Arena. This security weakness exists in the comment.php script where user input is not properly sanitized before being rendered back to web browsers. The specific parameter affected is the showpost parameter which processes user comments and displays them on web pages without adequate input validation or output encoding mechanisms.
This XSS vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent web application security flaws documented in the CWE database. The flaw allows remote attackers to inject malicious HTML and JavaScript code through the comment submission process, potentially enabling them to execute arbitrary scripts in the context of other users' browsers. The vulnerability is particularly concerning because it affects a core commenting functionality that users naturally interact with, making it an attractive target for exploitation.
The operational impact of this vulnerability extends beyond simple data theft or defacement. Attackers could leverage this flaw to hijack user sessions, redirect victims to malicious websites, or even perform actions on behalf of authenticated users within the application context. The reflected nature of this XSS vulnerability means that malicious scripts are injected into web pages and executed immediately when users view affected content, making the attack surface particularly broad. This type of vulnerability can lead to complete compromise of user accounts, especially if the application does not implement proper session management or if users have administrative privileges.
Security professionals should note that this vulnerability exemplifies poor input validation practices that were common in web applications of that era. The recommended mitigations include implementing proper output encoding for all user-supplied data before rendering it in web pages, utilizing parameterized queries or input sanitization routines, and implementing Content Security Policy headers to limit script execution. Organizations should also consider implementing web application firewalls and regular security testing to identify similar vulnerabilities. The ATT&CK framework categorizes this type of vulnerability under T1566 - Phishing, as attackers can use XSS to create convincing malicious web pages that appear legitimate to users. Additionally, this vulnerability highlights the importance of secure coding practices and input validation that should be enforced throughout the entire application lifecycle to prevent such persistent security weaknesses.