CVE-2022-36203 in Doctors Appointment System
Summary
by MITRE • 09/01/2022
Doctor's Appointment System 1.0 is vulnerable to Cross Site Scripting (XSS) via the admin panel. In addition, it leads to takeover the administrator account by stealing the cookie via XSS.
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Analysis
by VulDB Data Team • 10/11/2022
The Doctor's Appointment System version 1.0 presents a critical cross site scripting vulnerability that compromises the administrative interface and potentially enables full account takeover. This vulnerability stems from inadequate input validation and output sanitization within the system's admin panel components, creating an entry point for malicious actors to inject malicious scripts into the application's response. The flaw allows attackers to execute arbitrary javascript code within the context of the administrator's browser session, exploiting the fundamental weakness in web application security where user-supplied data is not properly escaped or validated before being rendered back to users.
The technical implementation of this vulnerability occurs when the system fails to sanitize user inputs that are subsequently displayed in administrative interfaces without proper encoding or filtering mechanisms. This creates a persistent cross site scripting vector that can be exploited through various attack vectors including form submissions, URL parameters, or any input field within the admin panel that accepts user data. The vulnerability specifically affects the administrative interface components where user inputs are directly reflected back to the browser without adequate security controls, making it susceptible to injection attacks that can manipulate the application's behavior and compromise user sessions.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the capability to steal administrative cookies and subsequently assume full administrative privileges. This session hijacking capability represents a severe escalation from typical XSS attacks, as it transforms a client-side scripting vulnerability into a full account takeover mechanism. Attackers can leverage the stolen cookies to impersonate administrators and gain complete control over the system's administrative functions, potentially leading to data exfiltration, system modification, and unauthorized access to sensitive medical information. The vulnerability creates a persistent threat vector that can remain active as long as the application continues to process unsanitized inputs.
Security mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's codebase, particularly within administrative interfaces. The system requires proper implementation of context-specific output encoding, including HTML, URL, and JavaScript encoding to prevent malicious scripts from executing in the browser context. Additionally, the application should implement strict content security policies, utilize secure session management practices, and employ anti-xsrf tokens to prevent unauthorized actions. Organizations should also consider implementing web application firewalls, regular security code reviews, and comprehensive penetration testing to identify and remediate similar vulnerabilities across the entire application stack. This vulnerability aligns with CWE-79 which specifically addresses cross site scripting flaws and represents a clear violation of secure coding practices that should be addressed through proper input sanitization and output encoding mechanisms. The attack surface can be significantly reduced by implementing defense in depth strategies including proper access controls, session management, and regular security assessments to prevent exploitation of similar vulnerabilities that could lead to unauthorized administrative access.