CVE-2020-21366 Explained : Impact and Mitigation

CVE-2020-21366 is a Cross Site Request Forgery vulnerability found in GreenCMS v.2.3, allowing attackers to gain privileges through the adduser function of index.php.

Understanding CVE-2020-21366

This CVE identifies a specific security issue in GreenCMS v.2.3 that can be exploited by attackers to elevate their privileges.

What is CVE-2020-21366?

The CVE-2020-21366 vulnerability is classified as a Cross Site Request Forgery (CSRF) flaw in GreenCMS v.2.3, enabling unauthorized users to perform actions on behalf of authenticated users without their consent.

The Impact of CVE-2020-21366

This vulnerability can lead to unauthorized privilege escalation, potentially allowing attackers to manipulate user accounts and access sensitive information within the GreenCMS system.

Technical Details of CVE-2020-21366

Vulnerability Description

The CSRF vulnerability in GreenCMS v.2.3 permits attackers to exploit the adduser function in index.php to gain unauthorized privileges.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: All versions of GreenCMS v.2.3 are susceptible to this vulnerability.

Exploitation Mechanism

Attackers can craft malicious requests that trick authenticated users into unknowingly executing unauthorized actions, such as adding a user account, leading to privilege escalation.

Mitigation and Prevention

Immediate Steps to Take

Implement CSRF tokens to validate and authenticate user requests.
Regularly monitor and review user activities for any suspicious behavior.

Long-Term Security Practices

Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Educate users on safe browsing practices and the importance of verifying actions before executing them.

Patching and Updates

Apply patches or updates provided by GreenCMS to address the CSRF vulnerability and enhance system security.