CVE-2020-18262 in ED01-CMS
Summary
by MITRE • 11/03/2021
ED01-CMS v1.0 was discovered to contain a SQL injection in the component cposts.php via the cid parameter.
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Analysis
by VulDB Data Team • 11/09/2021
The vulnerability CVE-2020-18262 represents a critical SQL injection flaw within ED01-CMS version 1.0, specifically within the cposts.php component. This issue arises from inadequate input validation and sanitization mechanisms that fail to properly handle user-supplied data. The vulnerability is triggered through the cid parameter, which serves as an identifier for content posts within the CMS framework. When an attacker submits malicious input through this parameter without proper filtering, the application directly incorporates the tainted data into SQL query constructions, creating an exploitable condition that allows for unauthorized database access and manipulation.
The technical implementation of this vulnerability stems from the application's failure to employ proper parameterized queries or input sanitization techniques. The cid parameter in cposts.php acts as a direct conduit for SQL command injection, where user input flows unchecked into database operations. This design flaw aligns with CWE-89, which specifically addresses SQL injection vulnerabilities resulting from improper handling of untrusted input in database queries. The vulnerability operates at the application layer and can be exploited through standard web application attack vectors, making it particularly dangerous as it requires no specialized tools or techniques beyond conventional SQL injection methodologies.
The operational impact of this vulnerability extends far beyond simple data retrieval, as successful exploitation can enable attackers to perform complete database compromise operations. An attacker could extract sensitive information including user credentials, personal data, and system configurations from the underlying database. The vulnerability also permits modification and deletion of database content, potentially leading to data corruption or complete system compromise. Additionally, attackers could leverage this vulnerability to establish persistent access points or escalate privileges within the CMS environment, creating long-term security risks for organizations relying on this platform. The attack surface is particularly concerning as it affects the core content management functionality, potentially compromising all published content and user data.
Mitigation strategies for CVE-2020-18262 must address both immediate remediation and long-term architectural improvements. The most effective immediate solution involves implementing proper input validation and parameterized queries throughout the application codebase, particularly within the cposts.php component. Organizations should deploy web application firewalls to detect and block malicious SQL injection attempts targeting the affected parameter. Additionally, implementing the principle of least privilege for database accounts and regular security code reviews can significantly reduce exploitation risks. This vulnerability also highlights the importance of adhering to OWASP Top Ten security guidelines and following secure coding practices as outlined in the ATT&CK framework for application security. Regular vulnerability assessments and penetration testing should be conducted to identify similar issues in other components of the CMS and prevent future exploitation attempts.