CVE-2018-20477 in S-Cms
Summary
by MITRE
An issue was discovered in S-CMS 3.0. It allows SQL Injection via the bank/callback1.php P_no field.
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Analysis
by VulDB Data Team • 04/24/2020
The vulnerability identified as CVE-2018-20477 represents a critical SQL injection flaw within S-CMS version 3.0, specifically manifesting in the bank/callback1.php component where the P_no field parameter is processed without adequate input validation or sanitization. This vulnerability falls under the Common Weakness Enumeration category CWE-89, which defines SQL injection as a condition where an application fails to properly escape or validate user-supplied data before incorporating it into SQL queries. The flaw enables attackers to manipulate the database query structure through malicious input, potentially compromising the entire database system and leading to unauthorized data access, modification, or deletion.
The technical implementation of this vulnerability occurs when the bank/callback1.php script receives the P_no parameter from user input and directly incorporates it into a database query without proper parameterization or input filtering mechanisms. Attackers can exploit this by crafting malicious SQL commands within the P_no field that bypass normal input restrictions and execute arbitrary database operations. This type of injection vulnerability allows for both authenticated and unauthenticated attack scenarios, depending on the application's access controls, and can potentially escalate to full system compromise if database credentials are not properly isolated from web application contexts.
The operational impact of CVE-2018-20477 extends beyond simple data theft, as it provides attackers with the capability to perform extensive database manipulation including data extraction, modification, and potentially complete database destruction. The vulnerability can be leveraged to extract sensitive information such as user credentials, personal data, financial records, and system configurations that are stored within the affected database. Additionally, the attack surface is particularly concerning given that S-CMS is a content management system that may store sensitive operational data, making this vulnerability a high-risk target for malicious actors seeking to compromise web applications and their underlying data repositories.
Mitigation strategies for this vulnerability should encompass immediate patching of the S-CMS 3.0 application to address the specific SQL injection flaw in the bank/callback1.php component. Organizations should implement proper input validation and parameterized queries throughout the application to prevent similar vulnerabilities from occurring in other components. The principle of least privilege should be enforced by ensuring database accounts used by the web application have minimal required permissions and are properly isolated from other system resources. Additionally, regular security assessments and penetration testing should be conducted to identify and remediate similar vulnerabilities across the entire application stack, while implementing web application firewalls and input sanitization mechanisms as additional protective layers against SQL injection attacks. This vulnerability aligns with ATT&CK technique T1071.004 for application layer protocol manipulation and T1190 for exploitation of remote services, highlighting the need for comprehensive defensive measures against such database-related attack vectors.