CVE-2020-20989 in DomainMod
Summary
by MITRE • 08/13/2021
A cross-site request forgery (CSRF) in /admin/maintenance/ of Domainmod 4.13 allows attackers to arbitrarily delete logs.
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Analysis
by VulDB Data Team • 08/18/2021
The vulnerability identified as CVE-2020-20989 represents a critical cross-site request forgery flaw within the Domainmod 4.13 administrative interface. This vulnerability specifically affects the /admin/maintenance/ endpoint where unauthorized users can exploit the missing CSRF protection mechanisms to perform destructive actions against the system. The flaw enables attackers to manipulate the administrative functions through forged requests that appear legitimate to the web application, thereby bypassing the intended security controls that should prevent unauthorized modifications to system data.
Domainmod is a web-based domain and hosting management tool that provides administrative interfaces for managing various aspects of domain registrations, hosting accounts, and related services. The vulnerability exists within the maintenance section of the administrative panel where users can perform system cleanup operations including log deletion. The absence of proper CSRF tokens or validation mechanisms in this particular endpoint means that an attacker can craft malicious requests that will execute with the privileges of any authenticated administrator who visits a compromised page or clicks on a malicious link. This represents a fundamental failure in the application's security architecture as it violates the principle of least privilege and proper session management.
The operational impact of this vulnerability is severe as it allows attackers to arbitrarily delete system logs which serve as critical audit trails for monitoring system activities, detecting security incidents, and maintaining compliance with regulatory requirements. The deletion of logs can significantly impede forensic investigations, compromise security monitoring capabilities, and potentially enable further attacks by removing evidence of initial compromise. This vulnerability also undermines the integrity of the system's administrative functions and can lead to complete operational disruption if attackers choose to delete other critical system components beyond just logs. The damage can be compounded when considering that log files often contain information about system configuration, user activities, and potential security breaches that are essential for maintaining system security posture.
From a cybersecurity perspective, this vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications. The flaw demonstrates a classic example of how insufficient input validation and missing security controls can lead to privilege escalation and data destruction. According to ATT&CK framework, this vulnerability maps to T1566.002 which covers "Phishing: Spearphishing Attachment" and T1078.004 which covers "Valid Accounts: Cloud Accounts" when considering how attackers might leverage this vulnerability to compromise administrative accounts. The vulnerability also relates to T1485 which covers "Data Destruction" as the arbitrary deletion of logs constitutes a form of data destruction that can severely impact system integrity and security monitoring capabilities.
The recommended mitigation strategies include implementing proper CSRF token validation mechanisms throughout the administrative interface, ensuring that all state-changing operations require verification of legitimate user intent through unique tokens generated for each session. Organizations should also consider implementing additional security controls such as rate limiting for administrative functions, enhanced logging of administrative activities, and regular security audits of web application interfaces. The most effective immediate fix involves adding anti-CSRF tokens to all forms and endpoints that perform destructive operations within the maintenance section, ensuring that requests can only be processed when they contain valid authentication tokens that are specific to the user's current session. Additionally, implementing proper access controls and monitoring for unusual administrative activities can help detect and prevent exploitation attempts.