CVE-2020-20691 Explained : Impact and Mitigation
Learn about CVE-2020-20691, a vulnerability in Monstra CMS v3.0.4 allowing attackers to execute arbitrary web scripts or HTML. Find mitigation steps and prevention measures here.
Monstra CMS v3.0.4 is vulnerable to an issue that allows attackers to execute arbitrary web scripts or HTML by bypassing the file extension filter and uploading crafted HTML files.
Understanding CVE-2020-20691
This CVE identifies a security vulnerability in Monstra CMS v3.0.4 that can be exploited by malicious actors to execute unauthorized web scripts or HTML content.
What is CVE-2020-20691?
This CVE pertains to a flaw in Monstra CMS v3.0.4 that enables attackers to upload specially crafted HTML files, bypassing the file extension filter, and execute arbitrary web scripts or HTML.
The Impact of CVE-2020-20691
The vulnerability allows threat actors to potentially compromise the integrity and security of the affected Monstra CMS installations. It can lead to unauthorized script execution and HTML content injection, posing a risk to the confidentiality and availability of the system.
Technical Details of CVE-2020-20691
Monstra CMS v3.0.4 vulnerability details:
Vulnerability Description
- Attackers can execute arbitrary web scripts or HTML by uploading manipulated HTML files that evade the file extension filter.
Affected Systems and Versions
- Monstra CMS v3.0.4 is confirmed to be affected by this vulnerability.
Exploitation Mechanism
- Malicious actors exploit the flaw by uploading specially crafted HTML files that bypass the file extension filter, enabling the execution of unauthorized web scripts or HTML.
Mitigation and Prevention
Protect your system from CVE-2020-20691 with the following measures:
Immediate Steps to Take
- Disable file uploads in Monstra CMS if not essential.
- Implement strict file upload validation mechanisms.
- Regularly monitor and review uploaded files for suspicious content.
Long-Term Security Practices
- Keep Monstra CMS and all its components up to date.
- Conduct regular security audits and penetration testing.
- Educate users on safe file handling practices.
Patching and Updates
- Apply patches and updates provided by Monstra CMS promptly to address this vulnerability.