CVE-2014-9919 in Bilboplanet
Summary
by MITRE
An issue was discovered in Bilboplanet 2.0. Stored XSS exists in the fullname parameter to signup.php.
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Analysis
by VulDB Data Team • 06/12/2020
The vulnerability identified as CVE-2014-9919 represents a critical stored cross-site scripting flaw within the Bilboplanet 2.0 web application. This security weakness resides in the signup.php script where user input submitted through the fullname parameter is not properly sanitized or validated before being stored in the application's database. The flaw allows an attacker to inject malicious JavaScript code that persists in the system and executes whenever the affected data is retrieved and displayed to other users. This type of vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically classified as a stored XSS variant where the malicious payload is permanently stored on the server rather than being reflected in a single request.
The operational impact of this vulnerability extends beyond simple data corruption or user inconvenience. When an attacker successfully exploits this stored XSS flaw, they can execute arbitrary JavaScript code within the context of other users' browsers who view the malicious content. This creates a vector for session hijacking, credential theft, and potential redirection to malicious websites. The attacker can leverage this vulnerability to steal cookies, session tokens, and potentially escalate privileges within the application. The persistent nature of stored XSS means that victims may be unknowingly exposed to the malicious code each time they interact with the compromised data, making the attack surface particularly dangerous. According to ATT&CK framework, this vulnerability maps to T1566.001 (Phishing with Malicious Attachment) and T1059.007 (Scripting - JavaScript) techniques, as it enables attackers to deliver malicious payloads through legitimate application interfaces.
The technical exploitation of this vulnerability requires minimal prerequisites and can be executed through simple input manipulation. An attacker needs only to submit a specially crafted fullname parameter containing malicious JavaScript code during the signup process, which is then stored in the application's database. When other users view the victim's profile information or when the data is rendered in various application interfaces, the stored payload executes in their browsers. The vulnerability's severity is amplified by the fact that it affects a core user registration functionality, making it accessible to any user who can initiate the signup process. Organizations using Bilboplanet 2.0 should implement comprehensive input validation and output encoding mechanisms to prevent such vulnerabilities. The remediation strategy should include immediate implementation of proper sanitization of user inputs, adoption of Content Security Policy headers, and regular security testing to identify similar vulnerabilities in other application components. This incident underscores the critical importance of input validation and output encoding in web application security, particularly for user-facing registration and profile management interfaces.