Qcubed Cross-Site Scripting Scanner

Qcubed is a PHP-based object-oriented web application framework primarily used for building dynamic web applications. Developers and software engineers typically use Qcubed to streamline application development and maintain a clean code structure. The framework supports rapid application development with its robust ORM (Object-Relational Mapping) and AJAX support. Additionally, it is valued for its extensibility and ease of use, making it a popular choice in small-to-medium enterprise web application projects. Qcubed is often deployed in environments that require intuitive web interfaces and structured data interactions. Due to its open-source nature, it is a cost-effective solution for developers seeking versatile and efficient web application frameworks.

Cross-Site Scripting (XSS) is a security vulnerability that allows attackers to inject scripts into web pages, which are then executed in the context of another user. This type of vulnerability can lead to unauthorized actions being performed on behalf of the user, leaking sensitive information, or compromising the integrity of web applications. XSS attacks generally exploit web applications that fail to properly validate or escape user inputs in web pages. By executing malicious scripts, attackers can manipulate web content or even gain control over the affected system. It poses significant security risks, especially in frameworks like Qcubed, which are foundational for various web applications.

The vulnerability in Qcubed occurs through the /assets/php/_devtools/installer/step_2.php endpoint, specifically via the installation_path parameter. This parameter is not adequately sanitized, allowing remote attackers to inject arbitrary JavaScript. The vulnerability is triggered when a crafted payload is sent to this endpoint, resulting in the execution of scripts in a user's browser. This lack of input validation can lead to the execution of unauthorized commands or scripts by malicious actors. Due to the way web pages process script content, this type of vulnerability relies heavily on unsanitized input being included in web responses.

The potential effects of exploiting the Cross-Site Scripting vulnerability in Qcubed could be severe. Attackers can steal user session cookies, leading to session hijacking and unauthorized access to the victim's accounts. They can also redirect users to phishing sites designed to steal credentials or sensitive information. In addition, attackers may deface websites or inject misleading or harmful content into web pages viewed by unsuspecting users. In multi-user environments, the exploitation of XSS vulnerabilities can lead to widespread data breaches or loss of trust in the web application.

REFERENCES

• https://github.com/qcubed/qcubed/issues/1230