CVE-2022-0940 : What You Need to Know

A stored Cross-Site Scripting (XSS) vulnerability has been identified in GitHub repository star7th/showdoc prior to version 2.10.4, allowing attackers to execute malicious scripts in users' browsers.

Understanding CVE-2022-0940

This CVE pertains to a Stored XSS vulnerability in star7th/showdoc that can have a medium severity impact.

What is CVE-2022-0940?

The vulnerability is caused by unrestricted file upload in the mentioned GitHub repository, enabling malicious actors to inject and execute XSS payloads.

The Impact of CVE-2022-0940

With a CVSS base score of 6.3, this medium severity vulnerability can lead to unauthorized script execution, potentially compromising confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2022-0940

This section covers the specifics of the vulnerability.

Vulnerability Description

The flaw arises from the lack of restrictions on file uploads, allowing attackers to upload files containing malicious scripts that are then executed in users' browsers.

Affected Systems and Versions

The vulnerability affects star7th/showdoc versions prior to 2.10.4.

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading specially crafted files containing malicious scripts, which are executed when accessed by other users.

Mitigation and Prevention

To safeguard your systems from CVE-2022-0940, consider the following mitigation strategies.

Immediate Steps to Take

Update star7th/showdoc to version 2.10.4 or later to mitigate the vulnerability.
Implement input validation and file upload restrictions to prevent malicious uploads.

Long-Term Security Practices

Regularly scan and monitor your systems for any signs of unauthorized file uploads or malicious scripts.
Educate users on safe browsing practices to minimize the risk of executing malicious scripts.

Patching and Updates

Stay informed about security patches and updates for star7th/showdoc to address any new vulnerabilities.