CVE-2019-20413 : Security Advisory and Response

Atlassian Jira Server and Data Center versions prior to 7.13.9 and between 8.0.0 to 8.4.2 are vulnerable to a Denial of Service (DoS) attack on the UserPickerBrowser.jspa page, potentially leading to application unavailability.

Understanding CVE-2019-20413

This CVE identifies a DoS vulnerability in Atlassian Jira Server and Data Center versions.

What is CVE-2019-20413?

The UserPickerBrowser.jspa page in Atlassian Jira Server and Data Center versions before 7.13.9 and between 8.0.0 to 8.4.2 is susceptible to a Denial of Service (DoS) attack. Remote attackers can exploit this vulnerability to impact the application's availability.

The Impact of CVE-2019-20413

The vulnerability can result in a DoS attack, causing the application to become unavailable, disrupting normal operations and potentially leading to service downtime.

Technical Details of CVE-2019-20413

This section provides technical insights into the CVE.

Vulnerability Description

Atlassian Jira Server and Data Center versions are vulnerable to a DoS attack on the UserPickerBrowser.jspa page.

Affected Systems and Versions

Atlassian Jira Server versions before 7.13.9 and between 8.0.0 to 8.4.2.

Exploitation Mechanism

Remote attackers can exploit the vulnerability to launch a DoS attack, impacting the application's availability.

Mitigation and Prevention

Protect your systems from CVE-2019-20413 with these measures.

Immediate Steps to Take

Update Atlassian Jira Server to versions 7.13.9 or higher to mitigate the vulnerability.
Monitor network traffic for any suspicious activity targeting the UserPickerBrowser.jspa page.

Long-Term Security Practices

Regularly update and patch Atlassian Jira Server to ensure protection against known vulnerabilities.
Implement network security measures to detect and prevent DoS attacks.

Patching and Updates

Apply security patches provided by Atlassian promptly to address CVE-2019-20413 and other potential vulnerabilities.