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CVE-2018-5230 : What You Need to Know

Learn about CVE-2018-5230 affecting Atlassian Jira versions prior to 7.6.6, between 7.7.0 and 7.7.4, between 7.8.0 and 7.8.4, and between 7.9.0 and 7.9.2. Understand the impact, technical details, and mitigation steps.

Atlassian Jira versions prior to 7.6.6, between 7.7.0 and 7.7.4, between 7.8.0 and 7.8.4, and between 7.9.0 and 7.9.2 are vulnerable to a Cross Site Scripting (XSS) attack through the issue collector.

Understanding CVE-2018-5230

The vulnerability in Atlassian Jira allows attackers to inject malicious HTML or JavaScript code via a cross site scripting (XSS) attack.

What is CVE-2018-5230?

The problem lies in the error message of custom fields in affected Jira versions, enabling attackers to execute XSS attacks by providing an invalid value.

The Impact of CVE-2018-5230

This vulnerability could lead to unauthorized access, data theft, and potential manipulation of Jira instances by malicious actors.

Technical Details of CVE-2018-5230

The following technical details outline the specifics of CVE-2018-5230:

Vulnerability Description

The vulnerability in Atlassian Jira versions allows for the insertion of malicious HTML or JavaScript code through a cross site scripting (XSS) attack.

Affected Systems and Versions

        Atlassian Jira versions prior to 7.6.6
        Atlassian Jira versions between 7.7.0 and 7.7.4
        Atlassian Jira versions between 7.8.0 and 7.8.4
        Atlassian Jira versions between 7.9.0 and 7.9.2

Exploitation Mechanism

Attackers can exploit this vulnerability by providing an invalid value in the error message of custom fields, allowing them to execute XSS attacks.

Mitigation and Prevention

To address CVE-2018-5230, consider the following mitigation strategies:

Immediate Steps to Take

        Upgrade Atlassian Jira to version 7.6.6 or higher to mitigate the vulnerability.
        Implement input validation to prevent the insertion of malicious code.

Long-Term Security Practices

        Regularly monitor and update Jira to the latest versions to patch security vulnerabilities.

Patching and Updates

        Apply security patches provided by Atlassian promptly to ensure protection against known vulnerabilities.

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