CVE-2020-19669 in Eyoucms
Summary
by MITRE • 08/19/2021
Cross Site Request Forgery (CSRF) vulnerability exists in Eyoucms 1.3.6 that can add an admin account via /login.php?m=admin&c=Admin&a=admin_add&lang=cn.
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Analysis
by VulDB Data Team • 08/21/2021
The vulnerability identified as CVE-2020-19669 represents a critical cross site request forgery flaw in Eyoucms version 1.3.6 that allows unauthorized attackers to escalate privileges by creating administrative accounts. This vulnerability resides within the application's authentication and authorization mechanisms, specifically targeting the admin account creation endpoint accessible through the URL path /login.php?m=admin&c=Admin&a=admin_add&lang=cn. The flaw enables malicious actors to exploit the lack of proper CSRF protection measures, allowing them to perform administrative actions without legitimate authentication credentials.
The technical implementation of this vulnerability stems from insufficient validation of request origins and absence of anti-CSRF tokens in the administrative account creation functionality. When a legitimate administrator visits a malicious website or clicks on a crafted link, the application processes the request without verifying that it originated from the legitimate admin interface. This design flaw aligns with CWE-352, which specifically addresses cross-site request forgery vulnerabilities in web applications. The vulnerability operates at the application layer, affecting the web server's ability to distinguish between legitimate administrative requests and forged requests submitted by attackers.
The operational impact of this vulnerability is severe as it provides attackers with a direct path to administrative control over the affected Eyoucms installation. Successful exploitation allows threat actors to create new administrator accounts with full privileges, potentially leading to complete system compromise, data exfiltration, and unauthorized modifications to website content. The vulnerability affects organizations that rely on Eyoucms for their website management, particularly those with limited security monitoring capabilities. Attackers can leverage this flaw to establish persistent access to web applications, making it a high-value target for cybercriminals seeking long-term system control.
Mitigation strategies should focus on implementing robust anti-CSRF protection measures including the mandatory use of anti-CSRF tokens for all administrative actions, proper validation of request origins, and enforcement of strict session management policies. Organizations should immediately upgrade to patched versions of Eyoucms, as the vulnerability has been addressed in subsequent releases. Security professionals should also implement web application firewalls to detect and block suspicious administrative account creation requests, while establishing comprehensive monitoring for unauthorized administrative activities. The remediation process should include thorough code review to ensure all administrative endpoints properly validate request authenticity and implement proper access controls as recommended by the ATT&CK framework's privilege escalation techniques. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in web applications.