CVE-2021-39125 : What You Need to Know

This CVE-2021-39125 article provides details about an enumeration vulnerability affecting Atlassian Jira Server and Data Center.

Understanding CVE-2021-39125

This section will cover the impact, technical details, and mitigation strategies related to CVE-2021-39125.

What is CVE-2021-39125?

CVE-2021-39125 refers to an enumeration vulnerability in Atlassian Jira Server and Data Center, allowing remote attackers to discover user usernames.

The Impact of CVE-2021-39125

The vulnerability in Atlassian Jira Server and Data Center could lead to information disclosure by revealing user details through the password reset page.

Technical Details of CVE-2021-39125

This section delves into the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability permits anonymous remote attackers to enumerate usernames of users through the password reset page in affected versions.

Affected Systems and Versions

Atlassian Jira Server versions before 8.5.10 and from 8.6.0 to 8.13.1
Atlassian Jira Data Center versions before 8.5.10 and from 8.6.0 to 8.13.1

Exploitation Mechanism

The vulnerability allows attackers to exploit the password reset page to reveal user details, compromising user privacy.

Mitigation and Prevention

This section outlines the necessary steps to address and prevent the CVE-2021-39125 vulnerability.

Immediate Steps to Take

Upgrade Atlassian Jira Server and Data Center to versions 8.5.10, 8.13.1, or higher.
Monitor user activities and access to prevent unauthorized enumeration.

Long-Term Security Practices

Regularly update Atlassian products to the latest versions to address security vulnerabilities.
Educate users on secure password practices and account protection.
Implement multi-factor authentication to enhance user account security.

Patching and Updates

Atlassian has released patches for the affected versions to mitigate the enumeration vulnerability.