CVE-2020-19891 Explained : Impact and Mitigation
Learn about CVE-2020-19891, an Arbitrary file write vulnerability in DBHcms v1.2.0 allowing remote authenticated admin users to upload a webshell. Find mitigation steps and best practices here.
DBHcms v1.2.0 has an Arbitrary file write vulnerability that allows a remote authenticated admin user to exploit the system.
Understanding CVE-2020-19891
This CVE involves an Arbitrary file write vulnerability in DBHcms v1.2.0, potentially leading to unauthorized access.
What is CVE-2020-19891?
The vulnerability in dbhcms\mod\mod.editor.php allows an attacker to upload a webshell by manipulating the 'updatefile' and 'tinymce_content' parameters.
The Impact of CVE-2020-19891
An authenticated admin user can exploit this flaw to gain unauthorized access, potentially compromising the system's security.
Technical Details of CVE-2020-19891
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability lies in the lack of security filtering in the 'updatefile' and 'tinymce_content' parameters, enabling an attacker to upload malicious files.
Affected Systems and Versions
- Affected System: DBHcms v1.2.0
- Affected Version: Not specified
Exploitation Mechanism
- Attacker manipulates the 'updatefile' and 'tinymce_content' parameters in dbhcms\mod\mod.editor.php
- Lack of security filtering allows the attacker to upload a webshell
Mitigation and Prevention
Protect your system from CVE-2020-19891 with these mitigation strategies.
Immediate Steps to Take
- Apply the vendor-supplied patches or updates promptly
- Implement strict input validation and filtering mechanisms
- Monitor and restrict file upload capabilities
Long-Term Security Practices
- Regularly update and patch all software components
- Conduct security audits and penetration testing to identify vulnerabilities
Patching and Updates
- Check for security updates from the vendor regularly
- Apply patches promptly to address known vulnerabilities