CVE-2018-18832 in DKCMS
Summary
by MITRE
admin/check.asp in DKCMS 9.4 allows SQL Injection via an ASPSESSIONID cookie to admin/admin.asp.
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Analysis
by VulDB Data Team • 04/07/2020
The vulnerability identified as CVE-2018-18832 affects DKCMS version 9.4 and represents a critical sql injection flaw within the administrative interface. This vulnerability specifically targets the admin/check.asp component which processes user authentication and authorization requests. The flaw manifests when an attacker manipulates the ASPSESSIONID cookie value to inject malicious sql commands into the backend database query execution process. The attack vector leverages the administrative authentication mechanism where the cookie parameter is directly incorporated into sql queries without proper input sanitization or parameterization.
The technical implementation of this vulnerability stems from improper input validation within the web application's authentication flow. When the admin/check.asp script processes the ASPSESSIONID cookie value, it fails to properly escape or parameterize the input before incorporating it into sql statements. This creates an environment where maliciously crafted cookie values can alter the intended sql query structure and execute unauthorized database operations. The vulnerability is classified under CWE-89 which specifically addresses sql injection flaws, and it aligns with ATT&CK technique T1190 which covers exploitation of remote services through sql injection attacks.
The operational impact of this vulnerability is severe as it provides attackers with unauthorized access to the administrative interface of the content management system. Successful exploitation can lead to complete compromise of the web application, allowing attackers to bypass authentication mechanisms, escalate privileges, and potentially gain full control over the underlying database. Attackers could extract sensitive information, modify content, delete data, or establish persistent backdoors within the system. The vulnerability affects the integrity and confidentiality of the entire cms infrastructure, making it a critical concern for organizations relying on DKCMS 9.4 for their web content management needs.
Mitigation strategies for this vulnerability should include immediate patching of the DKCMS 9.4 software to the latest version that addresses this specific sql injection flaw. Organizations should implement proper input validation and parameterization techniques throughout the application code to prevent sql injection attacks. Additionally, implementing web application firewalls and input sanitization measures can provide additional layers of protection. Security monitoring should be enhanced to detect suspicious cookie values and unusual authentication patterns. The vulnerability also highlights the importance of regular security assessments and vulnerability scanning to identify similar flaws within web applications. Organizations should also consider implementing database access controls and audit logging to minimize potential damage from successful exploitation attempts.