CVE-2020-8789 : Exploit Details and Defense Strategies

Composr 10.0.30 allows Persistent XSS via a Usergroup name under the Security configuration.

Understanding CVE-2020-8789

Composr 10.0.30 is vulnerable to Persistent XSS attacks due to inadequate input validation.

What is CVE-2020-8789?

CVE-2020-8789 is a vulnerability in Composr 10.0.30 that enables attackers to execute malicious scripts via a Usergroup name within the Security configuration.

The Impact of CVE-2020-8789

This vulnerability can lead to unauthorized access, data theft, and potential compromise of user information on affected systems.

Technical Details of CVE-2020-8789

Composr 10.0.30 is susceptible to Persistent XSS attacks due to a lack of proper input sanitization.

Vulnerability Description

The issue arises from the improper handling of Usergroup names within the Security configuration, allowing attackers to inject and execute malicious scripts.

Affected Systems and Versions

Product: Composr 10.0.30
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious Usergroup name and submitting it within the Security configuration, leading to script execution.

Mitigation and Prevention

Immediate action is crucial to mitigate the risks associated with CVE-2020-8789.

Immediate Steps to Take

Disable or restrict access to the Security configuration settings in Composr 10.0.30.
Implement input validation mechanisms to sanitize user inputs effectively.
Regularly monitor and audit usergroup names for any suspicious or malicious content.

Long-Term Security Practices

Educate users on safe naming conventions to prevent XSS attacks.
Keep software and security configurations up to date to address vulnerabilities promptly.

Patching and Updates

Apply patches or updates provided by Composr to fix the XSS vulnerability in version 10.0.30.