CVE-2019-11584 : Exploit Details and Defense Strategies

A vulnerability in Jira's MigratePriorityScheme resource allows attackers to inject arbitrary HTML or JavaScript through a cross-site scripting (XSS) vulnerability in the URL of an issue's priority icon.

Understanding CVE-2019-11584

This CVE affects Atlassian's Jira software, specifically versions prior to 8.3.2, and was made public on August 13, 2019.

What is CVE-2019-11584?

The vulnerability in Jira's MigratePriorityScheme resource enables attackers to perform cross-site scripting (XSS) attacks by injecting malicious HTML or JavaScript code through the URL of an issue's priority icon.

The Impact of CVE-2019-11584

This vulnerability could allow remote attackers to execute arbitrary code within the context of the affected application, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-11584

This section provides more technical insights into the vulnerability.

Vulnerability Description

The MigratePriorityScheme resource in Jira before version 8.3.2 allows remote attackers to inject arbitrary HTML or JavaScript via a cross-site scripting (XSS) vulnerability in the priority icon URL of an issue priority.

Affected Systems and Versions

Product: Jira
Vendor: Atlassian
Versions Affected: Prior to 8.3.2
Version Type: Custom

Exploitation Mechanism

The vulnerability occurs due to inadequate input validation in the URL of an issue's priority icon, allowing attackers to inject malicious scripts.

Mitigation and Prevention

Protecting systems from CVE-2019-11584 requires immediate actions and long-term security measures.

Immediate Steps to Take

Upgrade Jira to version 8.3.2 or later to mitigate the vulnerability.
Implement strict input validation mechanisms to prevent XSS attacks.
Monitor and filter user inputs to detect and block malicious scripts.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Educate developers and users on secure coding practices to prevent XSS and other security threats.

Patching and Updates

Stay informed about security updates and patches released by Atlassian for Jira.
Apply patches promptly to ensure the software is protected against known vulnerabilities.