CVE-2020-4013 : Security Advisory and Response

Atlassian Fisheye and Crucible before version 4.8.1 are affected by a Cross Site Scripting (XSS) vulnerability that allows remote attackers to inject arbitrary HTML or Javascript.

Understanding CVE-2020-4013

This CVE involves a security issue in Atlassian's Fisheye and Crucible products that could be exploited by attackers to execute XSS attacks.

What is CVE-2020-4013?

The review resource in Atlassian Fisheye and Crucible before version 4.8.1 is susceptible to a cross site scripting (XSS) vulnerability, enabling malicious actors to inject arbitrary HTML or Javascript via review objectives.

The Impact of CVE-2020-4013

This vulnerability could lead to unauthorized access, data theft, and potential manipulation of content within the affected systems.

Technical Details of CVE-2020-4013

Atlassian's Fisheye and Crucible products are affected by this XSS vulnerability.

Vulnerability Description

The flaw allows remote attackers to inject malicious code through the review objectives, posing a risk of XSS attacks.

Affected Systems and Versions

Product: Crucible
Vendor: Atlassian
Versions Affected: Less than 4.8.1 (unspecified custom version)
Product: Fisheye
Vendor: Atlassian
Versions Affected: Less than 4.8.1 (unspecified custom version)

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious HTML or Javascript code through the review objectives, potentially compromising the integrity of the systems.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2020-4013.

Immediate Steps to Take

Update Fisheye and Crucible to version 4.8.1 or later to mitigate the XSS vulnerability.
Implement input validation mechanisms to sanitize user inputs and prevent malicious code injection.

Long-Term Security Practices

Regularly monitor and audit the security configurations of Fisheye and Crucible.
Educate users on safe browsing practices and the risks associated with XSS attacks.

Patching and Updates

Stay informed about security updates and patches released by Atlassian for Fisheye and Crucible.
Promptly apply patches to ensure the systems are protected against known vulnerabilities.