CVE-2005-4707 in PHP GEN
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in PHP GEN before 1.3 allow remote attackers to inject arbitrary web script or HTML via unknown attack vectors.
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Analysis
by VulDB Data Team • 08/05/2017
The vulnerability identified as CVE-2005-4707 represents a critical security flaw in PHP GEN versions prior to 1.3, specifically manifesting as multiple cross-site scripting vulnerabilities that enable remote attackers to execute malicious web scripts or HTML code within victim browsers. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79, which defines weaknesses related to improper neutralization of input during web page generation, making it a fundamental web application security issue. The affected PHP GEN software, which likely serves as a content management or web application framework, creates an environment where user input is not adequately sanitized before being rendered in web pages, thereby exposing applications built on this platform to potential exploitation.
The technical nature of this vulnerability stems from insufficient input validation and output encoding mechanisms within the PHP GEN framework. Attackers can exploit these weaknesses through various unknown attack vectors that manipulate the application's handling of user-supplied data, potentially allowing them to inject malicious scripts that execute in the context of other users' browsers. The lack of specific details about the exact attack vectors in the CVE description suggests that the vulnerability may have been widespread across multiple input points within the application, including form fields, URL parameters, or other user-controllable data entry points. This broad exposure increases the likelihood of successful exploitation and makes the vulnerability particularly dangerous as it can be leveraged through numerous entry points without requiring specific knowledge of particular application components.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform a range of malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious websites. When exploited, these XSS vulnerabilities can compromise the integrity and confidentiality of web applications built on the affected PHP GEN platform, potentially leading to complete system compromise if attackers can leverage the vulnerability to gain access to administrative functions or sensitive user data. The remote nature of the attack means that exploitation can occur from any location with internet access, making the vulnerability particularly concerning for organizations that rely on web applications for business-critical operations. This type of vulnerability also aligns with ATT&CK technique T1566, which describes the use of malicious web content to compromise systems, and T1071, which covers application layer protocols and communications.
Mitigation strategies for this vulnerability require immediate action including upgrading to PHP GEN version 1.3 or later, which presumably contains the necessary patches to address the XSS flaws. Organizations should also implement comprehensive input validation and output encoding mechanisms throughout their web applications to prevent similar vulnerabilities from occurring in other components. Security measures such as content security policies, proper sanitization of user inputs, and regular security audits should be implemented to reduce the risk of exploitation. Additionally, implementing web application firewalls and monitoring systems can help detect and prevent exploitation attempts. The vulnerability serves as a reminder of the importance of keeping web application frameworks updated and maintaining robust security practices, particularly in environments where multiple applications are built on shared platforms that may contain known vulnerabilities. Organizations should also consider implementing security training for developers to prevent similar issues in custom code development and ensure proper input handling practices are followed throughout the software development lifecycle.