CVE-2020-21127 in MetInfo
Summary
by MITRE • 09/16/2021
MetInfo 7.0.0 contains a SQL injection vulnerability via admin/?n=logs&c=index&a=dodel.
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Analysis
by VulDB Data Team • 09/19/2021
The vulnerability CVE-2020-21127 represents a critical SQL injection flaw within MetInfo version 7.0.0 that specifically targets the administrative interface. This vulnerability exists in the logs management component where the application fails to properly sanitize user input before incorporating it into database queries. The affected endpoint admin/?n=logs&c=index&a=dodel demonstrates how unfiltered parameters can be exploited to manipulate the underlying database operations. The flaw occurs when the application processes delete operations on log entries without adequate input validation or parameterization, creating an avenue for malicious actors to inject arbitrary SQL commands.
This vulnerability falls under the CWE-89 category of SQL Injection, which is classified as a high-severity weakness in the Common Weakness Enumeration catalog. The attack vector specifically targets the administrative functionality of the content management system, making it particularly dangerous as it could allow unauthorized users to escalate privileges and gain full control over the database. The vulnerability enables attackers to execute malicious SQL queries that can result in data extraction, modification, or deletion. According to the MITRE ATT&CK framework, this represents a technique categorized under T1071.004 for Application Layer Protocol: DNS and T1566 for Credential Access through exploitation of web application vulnerabilities.
The operational impact of this vulnerability extends beyond simple data compromise as it provides attackers with the ability to manipulate the entire logging infrastructure of the system. Successful exploitation could lead to complete database exposure, allowing attackers to access sensitive information stored within the MetInfo platform including user credentials, configuration details, and potentially other connected systems. The administrative interface being compromised means that attackers could also modify log entries to cover their tracks or manipulate system behavior. Organizations using MetInfo 7.0.0 are at significant risk of unauthorized data access and potential system takeover, with the vulnerability affecting any environment where the logs management functionality is accessible.
Mitigation strategies for CVE-2020-21127 should include immediate patching of the MetInfo application to the latest version that addresses this vulnerability. Organizations should implement proper input validation and parameterized queries throughout the application to prevent similar issues from occurring in other components. Network segmentation and access controls should be enforced to limit administrative interface access to authorized personnel only. Regular security auditing and penetration testing should be conducted to identify other potential injection points within the application. Additionally, implementing web application firewalls and database activity monitoring can provide additional layers of protection against exploitation attempts. The vulnerability highlights the importance of following secure coding practices and adhering to the principle of least privilege when designing administrative interfaces.