Cloud Defense Logo

Products

Solutions

Company

CVE-2020-36238 : Security Advisory and Response

Learn about CVE-2020-36238, a critical authorization vulnerability in Jira Server and Data Center versions, allowing remote attackers to verify usernames. Find mitigation steps and preventive measures here.

A vulnerability in Jira Server and Data Center versions prior to specific releases allows remote attackers to determine the validity of usernames.

Understanding CVE-2020-36238

This CVE identifies an authorization issue in Jira Server and Data Center that could be exploited by remote attackers.

What is CVE-2020-36238?

The vulnerability in the /rest/api/1.0/render resource in Jira Server and Data Center versions before 8.5.13, between 8.6.0 and 8.13.5, and between 8.14.0 and 8.15.1 enables anonymous remote attackers to verify the validity of usernames due to a missing permissions check.

The Impact of CVE-2020-36238

The vulnerability poses a risk of unauthorized user validation, potentially aiding malicious actors in reconnaissance activities.

Technical Details of CVE-2020-36238

This section delves into the specifics of the vulnerability.

Vulnerability Description

The issue arises from a lack of proper permissions validation in the /rest/api/1.0/render resource, allowing attackers to discern valid usernames.

Affected Systems and Versions

        Jira Server versions prior to 8.5.13, between 8.6.0 and 8.13.5, and between 8.14.0 and 8.15.1
        Jira Data Center versions matching the affected Jira Server versions

Exploitation Mechanism

Attackers can exploit this vulnerability remotely to check the validity of usernames without proper authorization.

Mitigation and Prevention

Protecting systems from CVE-2020-36238 requires immediate actions and long-term security practices.

Immediate Steps to Take

        Upgrade Jira Server and Data Center to versions 8.5.13, 8.13.5, or 8.15.1 to mitigate the vulnerability.
        Implement strict access controls and authentication mechanisms.

Long-Term Security Practices

        Regularly monitor and audit user access and permissions.
        Stay informed about security updates and patches for Jira products.

Patching and Updates

        Apply the latest patches and updates provided by Atlassian to address the vulnerability effectively.

Popular CVEs

CVE Id

Published Date

Is your System Free of Underlying Vulnerabilities?
Find Out Now