CVE-2021-20758 : Security Advisory and Response

This article provides detailed information on CVE-2021-20758, a Cross-site request forgery (CSRF) vulnerability in Cybozu Garoon versions 4.0.0 to 5.0.2 that allows remote attackers to hijack authentication.

Understanding CVE-2021-20758

CVE-2021-20758 is a security vulnerability in Cybozu Garoon, impacting versions 4.0.0 to 5.0.2. It is classified as a Cross-site request forgery (CSRF) vulnerability.

What is CVE-2021-20758?

CVE-2021-20758 is a CSRF vulnerability in Cybozu Garoon that enables a remote authenticated attacker to hijack the authentication of administrators. This can lead to the execution of arbitrary operations through unspecified vectors.

The Impact of CVE-2021-20758

The impact of this vulnerability is significant as it allows attackers to impersonate administrators and perform unauthorized actions within the system. This could result in data breaches, unauthorized access, and other malicious activities.

Technical Details of CVE-2021-20758

The technical details of CVE-2021-20758 include:

Vulnerability Description

Cybozu Garoon versions 4.0.0 to 5.0.2 are susceptible to CSRF attacks, enabling attackers to exploit the system's authentication mechanisms.

Affected Systems and Versions

The affected systems are Cybozu Garoon versions 4.0.0 to 5.0.2. Users of these versions are at risk of exploitation through CSRF attacks.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious requests that execute unauthorized operations using the hijacked authentication of administrators.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-20758, consider the following steps:

Immediate Steps to Take

Update Cybozu Garoon to a non-vulnerable version.
Implement strict access controls and user authentication mechanisms.
Monitor and log authentication-related activities for suspicious behavior.

Long-Term Security Practices

Regularly apply security patches and updates to Cybozu Garoon.
Conduct security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Stay informed about security advisories from Cybozu, Inc. and apply patches promptly to secure your system.