CVE-2021-39119 : Exploit Details and Defense Strategies

CVE-2021-39119 involves a vulnerability in Atlassian Jira Server and Data Center that allows users to receive updates on watched issues even after their account is revoked.

Understanding CVE-2021-39119

This CVE describes an Information Disclosure vulnerability affecting Atlassian Jira Server and Jira Data Center.

What is CVE-2021-39119?

The flaw in Jira Server and Data Center enables users to continue getting updates on watched issues post their account revocation.

The Impact of CVE-2021-39119

The vulnerability permits unauthorized access to issue notifications even after user account termination.

Technical Details of CVE-2021-39119

The technical specifics of the CVE elucidate how the vulnerability can be exploited, the affected systems, and potential countermeasures.

Vulnerability Description

The Broken Access Control flaw allows users to receive updates on watched Jira issues even after their account is revoked.

Affected Systems and Versions

Products: Jira Server, Jira Data Center
Vendor: Atlassian
Versions Affected: Before 8.19.0

Exploitation Mechanism

Users can exploit the vulnerability by leveraging the issue notification feature despite their account being deactivated.

Mitigation and Prevention

Understanding the mitigation steps and long-term practices plays a crucial role in securing systems from CVE-2021-39119.

Immediate Steps to Take

Upgrade Jira installations to version 8.19.0 or newer to mitigate the vulnerability.
Advise users to be cautious with watched issues notifications.

Long-Term Security Practices

Regularly monitor and update Jira Server and Data Center versions.
Educate users on secure issue management practices.

Patching and Updates

Apply patches provided by Atlassian promptly to address vulnerabilities. Regularly check for security updates and implement them accordingly.