CVE-2020-8981 Explained : Impact and Mitigation

A cross-site scripting (XSS) vulnerability in the Source Integration plugin for MantisBT allows arbitrary code execution via the Delete Repository page.

Understanding CVE-2020-8981

This CVE involves a security flaw in the Source Integration plugin for MantisBT that could lead to the execution of arbitrary code.

What is CVE-2020-8981?

CVE-2020-8981 is a cross-site scripting (XSS) vulnerability found in versions of the Source Integration plugin prior to 1.6.2 and 2.x before 2.3.1 for MantisBT. The issue arises from the repo_delete.php Delete Repository page, enabling the execution of arbitrary code if Content Security Policy (CSP) settings allow it.

The Impact of CVE-2020-8981

This vulnerability could be exploited by attackers to execute malicious code within the context of the affected web application, potentially leading to various security risks such as data theft, unauthorized access, and further compromise of the system.

Technical Details of CVE-2020-8981

The technical aspects of this CVE provide insight into the vulnerability's nature and its potential impact.

Vulnerability Description

The XSS vulnerability in the Source Integration plugin allows attackers to inject and execute arbitrary code through the repo_delete.php Delete Repository page.

Affected Systems and Versions

Source Integration plugin versions before 1.6.2 and 2.x before 2.3.1 for MantisBT

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the repo name on the Delete Repository page, taking advantage of lax CSP settings to execute malicious code.

Mitigation and Prevention

Protecting systems from CVE-2020-8981 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Source Integration plugin to version 1.6.2 or 2.3.1 to mitigate the vulnerability
Review and adjust CSP settings to restrict arbitrary code execution

Long-Term Security Practices

Regularly monitor and update all plugins and extensions to patch security vulnerabilities
Conduct security audits and penetration testing to identify and address potential weaknesses

Patching and Updates

Apply patches and updates provided by the plugin vendor to address the XSS vulnerability