CVE-2017-18404 in cPanel
Summary
by MITRE
cPanel before 68.0.15 allows domain data to be deleted for domains with the .lock TLD (SEC-341).
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Analysis
by VulDB Data Team • 07/18/2020
The vulnerability identified as CVE-2017-18404 represents a critical access control flaw within cPanel versions prior to 68.0.15 that specifically affects domains utilizing the .lock top-level domain. This issue falls under the category of improper access control as defined by CWE-284, where the system fails to properly enforce authorization mechanisms for sensitive operations. The vulnerability stems from an insufficient validation process that allows unauthorized deletion of domain data, creating a significant risk for organizations relying on cPanel for web hosting management and domain administration.
The technical implementation of this flaw occurs within the domain management subsystem of cPanel where the software fails to properly validate domain names ending with the .lock TLD during deletion operations. This oversight creates a pathway for malicious actors or unauthorized users to manipulate domain data, potentially leading to complete domain removal from the hosting environment. The vulnerability is particularly concerning because it specifically targets the .lock TLD, which is commonly used for secure domain registrations and may be associated with high-value or sensitive domains that require enhanced protection. This weakness operates at the application layer and can be exploited through various attack vectors including command injection, cross-site scripting, or direct API manipulation depending on the cPanel configuration and access controls in place.
The operational impact of this vulnerability extends beyond simple data loss, encompassing potential service disruption, customer trust degradation, and compliance violations for organizations managing sensitive domain information. When domain data is deleted, it can result in complete website outages, loss of email configurations, DNS settings, and associated hosting resources that may require extensive manual restoration. Organizations using cPanel for enterprise hosting may face regulatory compliance issues if domain data deletion occurs without proper authorization, particularly in industries governed by standards such as pci dss, hipaa, or soc 2. The attack surface is further expanded when considering that .lock domains are often used for secure communications and may contain sensitive information that could be exploited for phishing, identity theft, or other malicious activities. This vulnerability aligns with ATT&CK technique T1485 which involves data destruction and the disruption of availability of systems and data, potentially causing cascading effects throughout dependent services and applications.
Mitigation strategies for CVE-2017-18404 should prioritize immediate patching of cPanel installations to version 68.0.15 or later where the vulnerability has been addressed through enhanced input validation and access control mechanisms. Organizations should implement additional monitoring controls to detect unauthorized domain deletion activities and establish automated alerts for critical domain management operations. Network segmentation and principle of least privilege should be enforced to limit access to domain management functions, while regular security audits should verify that domain data integrity is maintained across all hosting environments. The remediation process should include comprehensive testing to ensure that the patch does not introduce regressions in legitimate domain management operations, and organizations should consider implementing multi-factor authentication for administrative access to cPanel systems. Additionally, regular security assessments should be conducted to identify similar vulnerabilities in other hosting management systems and ensure that proper validation controls are in place for all domain-related operations.