CVE-2019-8449 : Exploit Details and Defense Strategies

An information disclosure vulnerability in Jira, prior to version 8.4.0, allows remote attackers to enumerate usernames through the resource /rest/api/latest/groupuserpicker.

Understanding CVE-2019-8449

This CVE involves an information disclosure vulnerability in Atlassian's Jira software.

What is CVE-2019-8449?

The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.

The Impact of CVE-2019-8449

Remote attackers can exploit this vulnerability to gather usernames from the affected Jira instances.

Technical Details of CVE-2019-8449

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in Jira allows attackers to extract usernames through the /rest/api/latest/groupuserpicker resource.

Affected Systems and Versions

Product: Jira
Vendor: Atlassian
Versions Affected: All versions prior to 8.4.0

Exploitation Mechanism

Attackers can exploit this vulnerability remotely to retrieve usernames from Jira instances.

Mitigation and Prevention

Protecting systems from CVE-2019-8449 is crucial to maintaining security.

Immediate Steps to Take

Upgrade Jira to version 8.4.0 or later to mitigate the vulnerability.
Monitor for any unauthorized access or unusual activities on Jira instances.

Long-Term Security Practices

Regularly update Jira and other software to patch known vulnerabilities.
Implement access controls and user permissions to limit exposure of sensitive information.

Patching and Updates

Stay informed about security updates and patches released by Atlassian for Jira.