CVE-2021-20761 Explained : Impact and Mitigation

This CVE-2021-20761 article provides details about an improper input validation vulnerability identified in Cybozu Garoon versions 4.0.0 to 5.0.2, allowing a remote attacker with administrative privileges to manipulate email data.

Understanding CVE-2021-20761

This section delves into the specifics of the CVE-2021-20761 vulnerability and its implications.

What is CVE-2021-20761?

The vulnerability stems from improper input validation in the email functionality of Cybozu Garoon version 4.0.0 to 5.0.2. It enables a remote attacker with administrative rights to modify email data without the necessary privileges.

The Impact of CVE-2021-20761

The CVE-2021-20761 vulnerability poses a significant risk, as it allows unauthorized users to tamper with email content, potentially leading to data breaches and unauthorized access.

Technical Details of CVE-2021-20761

This section further explores the technical aspects of the CVE-2021-20761 vulnerability.

Vulnerability Description

The vulnerability arises from inadequate validation of user input within the E-mail feature of Cybozu Garoon versions 4.0.0 to 5.0.2, empowering attackers to manipulate email data.

Affected Systems and Versions

Cybozu Garoon versions 4.0.0 to 5.0.2 are impacted by this vulnerability, leaving them susceptible to exploitation by malicious actors.

Exploitation Mechanism

Remote attackers leveraging administrative privileges can exploit this vulnerability to tamper with email data without the required authorization.

Mitigation and Prevention

This section provides insights into the necessary steps to mitigate and prevent exploitation of CVE-2021-20761.

Immediate Steps to Take

Organizations should promptly update Cybozu Garoon to a patched version beyond 5.0.2 and monitor email activities for any anomalies.

Long-Term Security Practices

Implement robust input validation mechanisms and conduct regular security audits to identify and address potential vulnerabilities proactively.

Patching and Updates

Stay vigilant for security advisories from Cybozu, Inc. and promptly apply patches to secure your systems against known vulnerabilities.