CVE-2021-39116 Explained : Impact and Mitigation

This CVE article provides insights into a Denial of Service vulnerability affecting Atlassian Jira Server and Data Center.

Understanding CVE-2021-39116

This section delves into the details of CVE-2021-39116 affecting Jira Server and Jira Data Center.

What is CVE-2021-39116?

CVE-2021-39116 is a vulnerability found in Atlassian Jira Server and Data Center versions before 8.13.14 and from 8.14.0 before 8.19.0. It allows remote attackers to impact the application's availability through a Denial of Service (DoS) exploit in the GIF Image Reader component.

The Impact of CVE-2021-39116

The vulnerability in CVE-2021-39116 can lead to a Denial of Service attack, affecting the availability of Atlassian Jira Server and Data Center instances.

Technical Details of CVE-2021-39116

In this section, the technical aspects of the CVE-2021-39116 vulnerability are discussed.

Vulnerability Description

The vulnerability allows remote attackers to target the application's availability through a DoS exploit in the GIF Image Reader component.

Affected Systems and Versions

Product: Jira Server
Versions Affected: Before 8.13.14, From 8.14.0 before 8.19.0
Product: Jira Data Center
Versions Affected: Before 8.13.14, From 8.14.0 before 8.19.0

Exploitation Mechanism

The vulnerability can be exploited by remote attackers to launch a Denial of Service attack on the affected Atlassian Jira Server and Data Center versions.

Mitigation and Prevention

In this section, preventive measures to address CVE-2021-39116 are detailed.

Immediate Steps to Take

Upgrade Atlassian Jira Server and Data Center to version 8.13.14 or higher.
Regularly monitor and audit application logs for any suspicious activities.

Long-Term Security Practices

Implement network segmentation to contain potential attacks.
Train IT staff on recognizing and responding to DoS attacks effectively.

Patching and Updates

Apply security patches provided by Atlassian promptly to mitigate the vulnerability.