CVE-2022-22117 : Vulnerability Insights and Analysis

In Directus versions 9.0.0-alpha.4 through 9.4.1, a Stored Cross-Site Scripting (XSS) vulnerability exists due to unrestricted file upload of .html files in the media upload functionality. This allows a low privileged attacker to upload a crafted HTML file as a profile avatar, triggering an XSS payload when accessed.

Understanding CVE-2022-22117

This CVE involves a security issue in Directus versions 9.0.0-alpha.4 through 9.4.1 that enables threat actors to execute cross-site scripting attacks through uploaded HTML files.

What is CVE-2022-22117?

The vulnerability in Directus versions 9.0.0-alpha.4 through 9.4.1 permits arbitrary file uploads of .html files in the media upload feature, creating a Cross-Site Scripting risk where attackers can inject malicious code.

The Impact of CVE-2022-22117

The vulnerability poses a moderate risk with a CVSS base score of 5.4 (Medium severity), potentially leading to unauthorized script execution and data theft.

Technical Details of CVE-2022-22117

This section will cover the specifics of the vulnerability, affected systems, and how exploitation occurs.

Vulnerability Description

The flaw allows low privileged users to upload crafted HTML files posing as avatars, leading to XSS payload execution upon viewing by an admin or another user.

Affected Systems and Versions

Directus versions 9.0.0-alpha.4 through 9.4.1 are affected by this XSS vulnerability, making these versions susceptible to attack.

Exploitation Mechanism

By exploiting the unrestricted .html file uploads, threat actors can plant malicious code in profile avatars, which triggers when accessed by unsuspecting users.

Mitigation and Prevention

To safeguard systems from CVE-2022-22117, immediate action and long-term security practices are essential.

Immediate Steps to Take

Update Directus to version 9.4.2 or apply the provided solutions to mitigate the XSS risk.

Long-Term Security Practices

Enforce secure coding practices, regularly update systems, and educate users on identifying and avoiding suspicious content.

Patching and Updates

Regularly monitor for security patches, apply updates promptly, and maintain a robust security posture to prevent XSS vulnerabilities.