CVE-2021-39127 : Vulnerability Insights and Analysis

This CVE-2021-39127 article provides details about a vulnerability affecting Atlassian Jira Server and Data Center, allowing remote attackers unauthorized access to the JQL endpoint.

Understanding CVE-2021-39127

This section delves into the specifics of the CVE-2021-39127 vulnerability affecting Atlassian Jira Server and Data Center.

What is CVE-2021-39127?

CVE-2021-39127 relates to a Broken Access Control vulnerability (BAC) in Atlassian Jira Server and Data Center, enabling anonymous remote attackers to access the query component JQL endpoint.

The Impact of CVE-2021-39127

The vulnerability affects versions of Jira Server and Data Center before 8.5.10 and from 8.6.0 to 8.13.1, potentially allowing unauthorized access to sensitive data and operations.

Technical Details of CVE-2021-39127

Explore the technical aspects of CVE-2021-39127.

Vulnerability Description

The vulnerability arises from improper access control in Jira Server and Data Center, enabling unauthorized parties to exploit the JQL component.

Affected Systems and Versions

Atlassian Jira Server versions prior to 8.5.10
Atlassian Jira Server versions 8.6.0 to 8.13.1

Exploitation Mechanism

Attackers can leverage the Broken Access Control vulnerability to execute unauthorized queries on the JQL endpoint.

Mitigation and Prevention

Learn how to mitigate and prevent the CVE-2021-39127 vulnerability.

Immediate Steps to Take

Upgrade affected Jira Server and Data Center instances to versions 8.5.10, 8.6.0, or higher.
Implement access control restrictions to limit unauthorized access to the JQL endpoint.

Long-Term Security Practices

Regularly monitor and audit access controls within Jira instances.
Stay informed about security updates and patches provided by Atlassian.

Patching and Updates

Apply the latest patches and updates released by Atlassian to address the Broken Access Control vulnerability in Jira Server and Data Center.