CVE-2017-18093 : Security Advisory and Response

Atlassian Fisheye and Crucible versions prior to 4.4.3 and 4.5.0 are vulnerable to a cross-site scripting (XSS) attack.

Understanding CVE-2017-18093

This CVE involves a security vulnerability in Atlassian Fisheye and Crucible that allows remote attackers to execute XSS attacks.

What is CVE-2017-18093?

Remote attackers with repository modification permissions can exploit a cross-site scripting vulnerability in Atlassian Fisheye and Crucible versions prior to 4.4.3 and 4.5.0 by injecting malicious HTML or JavaScript code.

The Impact of CVE-2017-18093

This vulnerability can lead to unauthorized execution of scripts in a user's browser, potentially compromising sensitive data and user interactions on affected systems.

Technical Details of CVE-2017-18093

Atlassian Fisheye and Crucible versions prior to 4.4.3 and 4.5.0 are susceptible to XSS attacks.

Vulnerability Description

The vulnerability allows remote attackers to inject arbitrary HTML or JavaScript code through the location setting of a configured repository.

Affected Systems and Versions

Product: Fisheye and Crucible
Vendor: Atlassian
Vulnerable Versions: prior to 4.4.3, prior to 4.5.0

Exploitation Mechanism

Attackers with permission to modify a repository can exploit the XSS vulnerability by injecting malicious code through the repository's location setting.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Update Atlassian Fisheye and Crucible to versions 4.4.3 or higher to mitigate the XSS vulnerability.
Review and restrict repository modification permissions to trusted users only.

Long-Term Security Practices

Regularly monitor and audit repository configurations for any unauthorized changes.
Educate users on safe coding practices to prevent XSS attacks.

Patching and Updates

Apply security patches and updates provided by Atlassian to ensure the latest fixes for vulnerabilities like CVE-2017-18093.