CVE-2016-10522 in rails_admin Gem
Summary
by MITRE
rails_admin ruby gem <v1.1.1 is vulnerable to cross-site request forgery (CSRF) attacks. Non-GET methods were not validating CSRF tokens and, as a result, an attacker could hypothetically gain access to the application administrative endpoints exposed by the gem.
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Analysis
by VulDB Data Team • 04/03/2023
The rails_admin ruby gem version 1.1.1 and earlier contains a critical cross-site request forgery vulnerability that compromises the security of administrative endpoints. This vulnerability stems from the improper validation of CSRF tokens for non-GET HTTP methods within the gem's implementation. The flaw allows attackers to manipulate administrative functions through forged requests without proper authentication verification. The vulnerability specifically affects the authentication and authorization mechanisms that should protect sensitive administrative interfaces. When an attacker crafts malicious requests targeting administrative endpoints, the application fails to validate the presence or correctness of CSRF tokens for methods such as POST, PUT, or DELETE operations. This creates a significant security risk where unauthorized users could potentially perform administrative actions on behalf of legitimate users. The vulnerability operates at the application layer and directly impacts the integrity of web application security controls. According to CWE-352, this represents a classic cross-site request forgery weakness where the application fails to validate the origin of requests. The flaw is particularly dangerous in web applications that expose administrative interfaces through the rails_admin gem, as it allows attackers to bypass standard authentication mechanisms and execute privileged operations. The vulnerability is classified under the ATT&CK technique T1078 which covers valid accounts and T1566 which covers credential harvesting through social engineering or exploitation of web application vulnerabilities. The impact extends beyond simple data manipulation to potentially allow full administrative access to affected applications, making it a critical concern for organizations relying on ruby on rails applications with administrative interfaces.
The technical implementation of the rails_admin gem fails to properly enforce CSRF protection for non-GET requests, creating a gap in the security validation process. This occurs because the gem's middleware or controller logic does not consistently validate CSRF tokens across all HTTP methods, particularly those that modify application state. The flaw is rooted in the application's failure to implement proper request origin verification and token validation mechanisms. When non-GET requests are processed, the application should verify that the request originates from a legitimate source and contains a valid CSRF token generated by the application itself. However, the vulnerable version of rails_admin does not perform this validation, allowing attackers to construct forged requests that appear legitimate to the application. The vulnerability exists because the CSRF protection mechanism is either disabled or incorrectly implemented for certain request methods. This gap in validation allows attackers to leverage existing authenticated sessions to perform administrative actions without proper authorization. The vulnerability can be exploited through various means including phishing attacks, cross-site scripting vulnerabilities, or by tricking users into visiting malicious websites that submit requests to the vulnerable application. The attack vector relies on the assumption that users have valid sessions with administrative privileges, making the exploitation particularly effective in environments where session management is not properly secured. The flaw demonstrates a failure in the principle of least privilege and proper access control implementation within the web application framework.
The operational impact of CVE-2016-10522 extends far beyond simple data integrity concerns to potentially enable complete compromise of administrative interfaces. Organizations using vulnerable versions of rails_admin face significant risks including unauthorized access to sensitive data, modification of application configurations, user account manipulation, and potential privilege escalation attacks. Attackers could exploit this vulnerability to gain full administrative control over affected applications, potentially leading to data breaches, service disruption, or complete system compromise. The vulnerability affects applications that rely on rails_admin for administrative interfaces, which are commonly found in content management systems, e-commerce platforms, and enterprise web applications. The exploitation of this vulnerability could result in financial losses, regulatory compliance violations, and damage to organizational reputation. Security teams must consider the potential for lateral movement within networks where administrative access could be leveraged to access other systems. The vulnerability also impacts the integrity of audit logs and application monitoring systems, as attackers could modify or delete records to cover their tracks. Organizations with applications using vulnerable rails_admin versions face potential liability issues related to data protection and security incident response. The impact is particularly severe in environments where administrative interfaces are not properly secured or where users have elevated privileges. The vulnerability requires immediate attention as it can be exploited without requiring specialized knowledge or tools, making it accessible to a broad range of threat actors. The operational risk assessment must include potential business continuity impacts, regulatory compliance requirements, and the cost of incident response and remediation activities.
The recommended mitigation strategy for CVE-2016-10522 involves immediate upgrade to rails_admin version 1.1.1 or later, which contains the necessary CSRF token validation fixes. Organizations should also implement additional security controls including proper session management, request origin validation, and comprehensive monitoring of administrative activities. The upgrade process should include thorough testing to ensure that legitimate administrative functions continue to operate correctly after the patch is applied. Security teams should review and validate the implementation of CSRF protection mechanisms throughout the application architecture, ensuring that all non-GET requests properly validate tokens. Additional mitigations include implementing web application firewalls, restricting administrative access to trusted networks, and conducting regular security assessments of web applications. Organizations should also establish incident response procedures for detecting and responding to potential exploitation attempts. The remediation process should include comprehensive testing of patched applications to verify that CSRF protection is functioning correctly. Security controls should be implemented at multiple layers including network security, application security, and user access controls to provide defense in depth. Regular security audits should be conducted to identify similar vulnerabilities in other components of the application stack. The mitigation strategy must also include user education regarding phishing attacks and social engineering techniques that could be used to exploit this vulnerability. Organizations should consider implementing additional authentication mechanisms such as multi-factor authentication for administrative access. The security posture should be continuously monitored and improved to prevent similar vulnerabilities from emerging in the future. Proper configuration management and change control processes should be established to ensure that security patches are applied promptly and consistently across all affected systems.