CVE-2021-20754 : Exploit Details and Defense Strategies

A remote authenticated attacker can exploit an improper input validation vulnerability in Workflow of Cybozu Garoon versions 4.0.0 to 5.0.2 to manipulate Workflow data without the necessary privilege.

Understanding CVE-2021-20754

This CVE involves an improper input validation vulnerability in Cybozu Garoon that could lead to unauthorized data alteration.

What is CVE-2021-20754?

The vulnerability in Workflow of Cybozu Garoon versions 4.0.0 to 5.0.2 allows a remote authenticated attacker to tamper with Workflow data they are not authorized to access.

The Impact of CVE-2021-20754

The impact of this vulnerability is that an attacker can modify Workflow data without the required privilege, potentially leading to unauthorized changes within the system.

Technical Details of CVE-2021-20754

This section delves into the specific technical aspects of CVE-2021-20754.

Vulnerability Description

The vulnerability arises from improper input validation in the Workflow feature of Cybozu Garoon 4.0.0 to 5.0.2, enabling remote attackers to manipulate data.

Affected Systems and Versions

Cybozu Garoon versions 4.0.0 to 5.0.2 are impacted by this vulnerability.

Exploitation Mechanism

A remote authenticated attacker can exploit this vulnerability to change Workflow data without the necessary authorization.

Mitigation and Prevention

To safeguard systems from CVE-2021-20754, immediate actions and long-term security measures are crucial.

Immediate Steps to Take

It is recommended to update the affected Cybozu Garoon instances to versions that contain patches addressing this vulnerability.

Long-Term Security Practices

Regularly monitor and update systems to prevent security gaps that could be exploited by attackers.

Patching and Updates

Ensure prompt installation of security patches and updates provided by Cybozu, Inc. to mitigate the risk posed by CVE-2021-20754.