CVE-2021-20803 : Security Advisory and Response
Learn about CVE-2021-20803 affecting Cybozu Remote Service versions 3.1.8 to 3.1.9. Understand the impact, technical details, and mitigation steps for this operation restriction bypass vulnerability.
Cybozu Remote Service versions 3.1.8 to 3.1.9 are impacted by an operation restriction bypass vulnerability that allows a remote authenticated attacker to modify data on the management screen. Here's what you need to know about CVE-2021-20803.
Understanding CVE-2021-20803
This section delves into the details of the CVE-2021-20803 vulnerability affecting Cybozu Remote Service.
What is CVE-2021-20803?
The vulnerability in Cybozu Remote Service versions 3.1.8 to 3.1.9 enables a remote authenticated attacker to manipulate data on the management screen by bypassing operation restrictions.
The Impact of CVE-2021-20803
The impact of this vulnerability is significant as it allows attackers to unauthorizedly alter data on the management screen, posing a risk to data integrity and confidentiality.
Technical Details of CVE-2021-20803
Explore the technical aspects of CVE-2021-20803 to understand its implications and severity.
Vulnerability Description
CVE-2021-20803 involves an access controls issue in Cybozu Remote Service versions 3.1.8 to 3.1.9, enabling authenticated remote attackers to modify data accessed through the management screen.
Affected Systems and Versions
The versions 3.1.8 to 3.1.9 of Cybozu Remote Service are specifically impacted by this vulnerability.
Exploitation Mechanism
The vulnerability can be exploited by remote authenticated attackers, allowing them to bypass operation restrictions and tamper with data displayed on the management screen.
Mitigation and Prevention
To address CVE-2021-20803 and enhance the security posture of systems using Cybozu Remote Service, specific mitigation steps and long-term security practices are recommended.
Immediate Steps to Take
Immediately apply any available patches or security updates provided by Cybozu, Inc. to remediate the operation restriction bypass vulnerability.
Long-Term Security Practices
Implement robust access control mechanisms, conduct regular security assessments, and educate users on secure data handling practices to prevent unauthorized data alterations.
Patching and Updates
Regularly monitor security advisories from Cybozu, Inc. and apply patches promptly to address vulnerabilities like CVE-2021-20803.