CVE-2006-2340 in PassMasterFlex
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in PassMasterFlex and PassMasterFlexPlus (PassMasterFlex+) 1.2 and earlier allows remote attackers to inject arbitrary web script or HTML via the (1) username, (2) password, or (3) User-Agent HTTP header in the Hack Log.
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Analysis
by VulDB Data Team • 07/26/2018
This cross-site scripting vulnerability exists in PassMasterFlex and PassMasterFlexPlus versions 1.2 and earlier, representing a critical security flaw that enables remote attackers to execute malicious scripts within the context of affected web applications. The vulnerability specifically targets three input vectors including the username field, password field, and User-Agent HTTP header within the Hack Log functionality of these password management tools. The flaw stems from inadequate input validation and output sanitization mechanisms that fail to properly escape or filter user-supplied data before it is rendered in web pages. This allows attackers to inject malicious HTML or JavaScript code that executes in the browsers of other users who access the compromised system.
The technical implementation of this vulnerability demonstrates a classic reflected cross-site scripting pattern where attacker-controlled input flows directly into the application's output without proper sanitization. When users view the Hack Log, the malicious code embedded in any of the three vulnerable fields gets executed in their browser context, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The vulnerability affects the authentication and logging mechanisms of these password management solutions, which are critical components for security infrastructure. According to CWE standards, this maps to CWE-79: Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly escape output in web applications.
The operational impact of this vulnerability extends beyond simple script execution as it compromises the integrity of the entire password management system. Attackers could exploit this weakness to steal user sessions, manipulate logged data, or gain unauthorized access to protected resources within the application. The fact that the vulnerability affects both username and password fields suggests a particularly dangerous attack surface where even legitimate authentication attempts could be weaponized. The User-Agent header inclusion indicates that this vulnerability could be exploited through seemingly benign HTTP requests, making detection more difficult and increasing the attack surface significantly.
Mitigation strategies for this vulnerability should include immediate input validation and output encoding across all user-supplied data, particularly in the Hack Log functionality. The implementation of proper Content Security Policy headers can provide additional protection against script execution. Security patches should be applied immediately to upgrade to versions that address this vulnerability, and organizations should conduct thorough security assessments of their password management infrastructure. This vulnerability aligns with ATT&CK technique T1566.001: Phishing: Spearphishing Attachment, as attackers could craft malicious inputs that exploit this weakness to deliver payloads to unsuspecting users. Regular security testing and input validation should be implemented as part of the application's security posture to prevent similar vulnerabilities in future development cycles. The vulnerability also underscores the importance of secure coding practices and proper HTML escaping mechanisms in web applications that process user input.