CVE-2021-20628 : Security Advisory and Response

CVE-2021-20628: What You Need to Know

This article provides detailed information about CVE-2021-20628, a cross-site scripting vulnerability in Address Book of Cybozu Office versions 10.0.0 to 10.8.4, allowing remote attackers to inject arbitrary scripts via unspecified vectors when using Mozilla Firefox.

Understanding CVE-2021-20628

CVE-2021-20628 is a cross-site scripting vulnerability in Cybozu Office, affecting versions 10.0.0 to 10.8.4. This vulnerability enables remote attackers to inject malicious scripts into the Address Book.

What is CVE-2021-20628?

The CVE-2021-20628 vulnerability is classified as a cross-site scripting issue that occurs in Cybozu Office versions 10.0.0 to 10.8.4. Attackers can exploit this flaw to execute arbitrary scripts through unspecified means, particularly when using Mozilla Firefox.

The Impact of CVE-2021-20628

This vulnerability allows remote attackers to carry out cross-site scripting attacks, potentially leading to unauthorized access, data theft, or other malicious activities targeted at users of Cybozu Office versions 10.0.0 to 10.8.4.

Technical Details of CVE-2021-20628

CVE-2021-20628 affects Cybozu Office versions 10.0.0 to 10.8.4 and is primarily characterized by a cross-site scripting vulnerability in the Address Book module, enabling attackers to insert and execute arbitrary scripts remotely.

Vulnerability Description

The vulnerability in Address Book of Cybozu Office versions 10.0.0 to 10.8.4 allows malicious actors to introduce harmful scripts into the application through unspecified attack vectors, especially when utilizing Mozilla Firefox.

Affected Systems and Versions

Cybozu Office versions 10.0.0 to 10.8.4 are vulnerable to CVE-2021-20628, impacting users who operate on these specific versions of the software.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by injecting malicious scripts into the Address Book module of Cybozu Office versions 10.0.0 to 10.8.4, with successful execution dependent on user interaction while using Mozilla Firefox.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-20628, immediate action and long-term security practices are crucial for safeguarding systems and data.

Immediate Steps to Take

Users are advised to update Cybozu Office to a secure version, avoid using Mozilla Firefox when operating the Address Book feature, and remain cautious of suspicious links or activities that could trigger cross-site scripting attacks.

Long-Term Security Practices

Implementing security measures such as regular software updates, monitoring for emerging threats, conducting security assessments, and enhancing user training on cybersecurity best practices can help prevent similar vulnerabilities in the future.

Patching and Updates

Cybozu, Inc. may release patches or security updates to address CVE-2021-20628. Users should promptly apply these patches and stay informed about any new developments related to the vulnerability.