CVE-2020-27359 : Exploit Details and Defense Strategies

A cross-site scripting (XSS) vulnerability in REDCap versions 8.11.6 through 9.x before 10 allows attackers to inject arbitrary JavaScript or HTML into the Messenger feature, potentially leading to unauthorized access and data manipulation.

Understanding CVE-2020-27359

This CVE involves a security issue in REDCap that could be exploited by attackers to execute malicious scripts.

What is CVE-2020-27359?

The vulnerability allows attackers to insert harmful code into messages, exploiting the filename of attached images or files.
Attackers can craft messages to execute XSS payloads on other accounts without user interaction.

The Impact of CVE-2020-27359

Attackers can compromise user accounts, including administrators, by injecting malicious scripts through the Messenger feature.
Unauthorized execution of JavaScript or HTML can lead to data theft, unauthorized access, and potential system compromise.

Technical Details of CVE-2020-27359

This section provides more technical insights into the vulnerability.

Vulnerability Description

The XSS flaw in REDCap versions 8.11.6 through 9.x before 10 allows for the injection of arbitrary JavaScript or HTML.
Exploiting the filename of attached files enables attackers to execute malicious code.

Affected Systems and Versions

Affected versions include REDCap 8.11.6 through 9.x before version 10.

Exploitation Mechanism

Attackers can exploit the vulnerability by crafting messages with malicious payloads that execute on other accounts without user interaction.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Update REDCap to the latest version to patch the XSS vulnerability.
Educate users about the risks of clicking on suspicious links or opening attachments.

Long-Term Security Practices

Regularly monitor and audit messaging features for unusual activities.
Implement content security policies to mitigate XSS attacks.

Patching and Updates

Stay informed about security updates and apply patches promptly to prevent exploitation of known vulnerabilities.