CVE-2021-20771 Explained : Impact and Mitigation

Cybozu Garoon versions 4.0.0 to 5.5.0 has a cross-site scripting vulnerability that allows remote attackers to inject arbitrary scripts. Learn about the impact, technical details, and mitigation steps below.

Understanding CVE-2021-20771

This section provides insights into the CVE-2021-20771 vulnerability affecting Cybozu Garoon versions 4.0.0 to 5.5.0.

What is CVE-2021-20771?

The CVE-2021-20771 CVE ID is assigned to a cross-site scripting vulnerability in certain E-Mail functions of Cybozu Garoon versions 4.0.0 to 5.5.0. This flaw enables remote attackers to execute arbitrary script injections via unspecified methods.

The Impact of CVE-2021-20771

The impact of this vulnerability is significant as it allows malicious actors to inject and execute arbitrary scripts on affected systems. This could lead to unauthorized access, data theft, and potential system compromise.

Technical Details of CVE-2021-20771

Explore the technical aspects of the CVE-2021-20771 vulnerability to understand its implications and potential risks.

Vulnerability Description

The cross-site scripting flaw in Cybozu Garoon versions 4.0.0 to 5.5.0 permits remote attackers to inject malicious scripts via unspecified vectors, posing a serious security risk to organizations using the affected versions.

Affected Systems and Versions

Cybozu Garoon versions 4.0.0 to 5.5.0 are impacted by this vulnerability. Users and administrators of these versions should take immediate action to mitigate the risk of exploitation.

Exploitation Mechanism

The exploitation of CVE-2021-20771 involves sending crafted requests to the E-Mail functions of Cybozu Garoon, allowing attackers to insert and execute arbitrary scripts within the application.

Mitigation and Prevention

Understand how to address the CVE-2021-20771 vulnerability and prevent its exploitation with effective security measures.

Immediate Steps to Take

It is crucial to apply security patches provided by Cybozu, Inc. immediately to remediate the vulnerability in Cybozu Garoon versions 4.0.0 to 5.5.0. Additionally, organizations should monitor for any signs of unauthorized script injections.

Long-Term Security Practices

Incorporate regular security assessments and penetration testing to detect and address vulnerabilities proactively. Educate users about safe email practices and security awareness to prevent future attacks.

Patching and Updates

Stay informed about security updates and patches released by Cybozu, Inc. for Cybozu Garoon. Promptly apply these updates to ensure the protection of your systems against known vulnerabilities.