CVE-2012-4324 in Script
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in PHPJabbers Vacation Rental Script allows remote attackers to hijack the authentication of administrators for requests that add administrator accounts via a create action in the AdminUsers module to index.php.
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Analysis
by VulDB Data Team • 03/16/2019
The CVE-2012-4324 vulnerability represents a critical cross-site request forgery flaw within the PHPJabbers Vacation Rental Script that fundamentally undermines the application's administrative security controls. This vulnerability specifically targets the AdminUsers module where the create action is exposed through the index.php endpoint, creating a pathway for malicious actors to exploit the authentication mechanisms of legitimate administrators. The flaw resides in the absence of proper anti-CSRF token validation within the administrative account creation workflow, allowing unauthorized parties to craft malicious requests that appear to originate from authenticated administrator sessions. This vulnerability directly violates the principle of least privilege and authentication integrity that forms the cornerstone of web application security frameworks.
The technical implementation of this CSRF vulnerability stems from the application's failure to implement mandatory request validation mechanisms for administrative operations. When administrators perform account creation tasks through the AdminUsers module, the system does not require the presence of a unique, unpredictable token that would verify the authenticity of the request origin. Attackers can construct malicious web pages or exploit existing vulnerabilities in other parts of the application to trigger administrative actions without the knowledge or consent of the legitimate administrator. The attack vector typically involves embedding malicious JavaScript or leveraging existing XSS vulnerabilities to automatically submit forged requests to the vulnerable index.php endpoint, effectively bypassing the authentication layer that should protect sensitive administrative functions.
The operational impact of this vulnerability extends far beyond simple privilege escalation, as it enables complete administrative takeover of affected systems. Once exploited, attackers can create new administrator accounts with full privileges, effectively establishing persistent backdoors within the application. This capability allows for comprehensive system compromise including data exfiltration, modification of rental listings, manipulation of booking systems, and potential lateral movement within network environments where the application resides. The vulnerability's exploitation does not require any special privileges or advanced technical skills, making it particularly dangerous as it can be leveraged by threat actors with minimal expertise. This aligns with ATT&CK technique T1078.004 which describes valid accounts being used for persistence, and CWE-352 which specifically addresses cross-site request forgery vulnerabilities.
Mitigation strategies for CVE-2012-4324 must focus on implementing robust anti-CSRF protection mechanisms throughout the application's administrative interfaces. The most effective approach involves generating and validating unique, unpredictable tokens for each administrative request, ensuring that these tokens are properly embedded in forms and validated server-side before processing sensitive operations. Organizations should implement the OWASP CSRF Protection guidelines, including the use of synchronizer tokens, origin validation, and proper session management practices. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other administrative functions. The fix requires modifications to the AdminUsers module to enforce token validation before any account creation operations are permitted, ensuring that all requests originate from legitimate authenticated sessions within the application's own domain context. This vulnerability demonstrates the critical importance of implementing defense-in-depth security measures and adheres to the principle that administrative interfaces require the highest level of authentication verification and request integrity checks.