CVE-2012-1211 in pfile
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in pfile/kommentar.php in Powie pFile 1.02 allows remote attackers to inject arbitrary web script or HTML via the filecat parameter.
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Analysis
by VulDB Data Team • 03/30/2025
The vulnerability identified as CVE-2012-1211 represents a classic cross-site scripting flaw within the Powie pFile 1.02 web application, specifically affecting the kommentar.php component. This issue resides in the filecat parameter handling mechanism where user-supplied input is inadequately sanitized before being rendered back to web browsers. The vulnerability classifies under CWE-79 which defines improper neutralization of input during web page generation, making it a direct descendant of the fundamental web application security principle that all user inputs must be properly validated and escaped before being incorporated into dynamic web content.
The technical exploitation of this vulnerability occurs when remote attackers submit malicious script code through the filecat parameter in the kommentar.php script. When the application processes this input without proper sanitization or encoding, the malicious payload gets executed within the context of other users' browsers who subsequently view the affected page. This creates a persistent threat vector where attackers can inject JavaScript code, HTML content, or other malicious web scripts that execute in the victim's browser environment. The vulnerability demonstrates a clear failure in input validation and output encoding practices that are fundamental to preventing XSS attacks according to the OWASP Top Ten and the Web Application Security Consortium guidelines.
The operational impact of this vulnerability extends beyond simple script injection, as it enables attackers to perform various malicious activities including session hijacking, credential theft, defacement of web content, and redirection to malicious sites. An attacker could craft a payload that steals session cookies or login credentials from authenticated users, potentially gaining unauthorized access to the application with elevated privileges. The vulnerability also allows for more sophisticated attacks such as phishing attempts where users are redirected to fraudulent websites or browser-based attacks that exploit other vulnerabilities present in the victim's browser environment. This type of vulnerability directly aligns with ATT&CK technique T1566 which covers social engineering through malicious content delivery.
Mitigation strategies for CVE-2012-1211 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The most effective approach involves sanitizing all user-supplied input through proper encoding techniques such as HTML entity encoding before rendering content in web pages. Developers should implement a whitelist-based input validation approach where only known safe characters and formats are accepted for the filecat parameter. Additionally, implementing Content Security Policy headers can provide an additional layer of protection by restricting the sources from which scripts can be executed within the application context. The application should also be updated to a patched version of Powie pFile or migrated to a more secure file management solution that follows modern security practices. According to NIST guidelines for secure coding, all web applications should employ proper input validation and output encoding as foundational security measures to prevent XSS vulnerabilities of this nature.