CVE-2021-39313 : Security Advisory and Response

The Simple Image Gallery WordPress plugin version up to and including 1.0.6 is vulnerable to Reflected Cross-Site Scripting, allowing attackers to inject arbitrary scripts through the msg parameter.

Understanding CVE-2021-39313

This CVE involves a security vulnerability in the Simple Image Gallery WordPress plugin that can lead to Cross-Site Scripting attacks.

What is CVE-2021-39313?

The CVE-2021-39313 vulnerability is a Reflected Cross-Site Scripting issue in the Simple Image Gallery plugin, enabling attackers to insert malicious scripts.

The Impact of CVE-2021-39313

This vulnerability can result in arbitrary script injection, potentially compromising the security and integrity of the affected WordPress sites.

Technical Details of CVE-2021-39313

This section provides specific technical details regarding the CVE-2021-39313 vulnerability.

Vulnerability Description

The vulnerability allows attackers to execute Reflected Cross-Site Scripting attacks via the msg parameter in the ~/simple-image-gallery.php file.

Affected Systems and Versions

Product: Simple Image Gallery
Vendor: Simple Image Gallery
Versions Affected: <= 1.0.6

Exploitation Mechanism

The vulnerability can be exploited by manipulating the msg parameter in the mentioned PHP file, enabling malicious script injections.

Mitigation and Prevention

To address the CVE-2021-39313 vulnerability, certain steps can be taken for mitigation and prevention.

Immediate Steps to Take

Uninstall the Simple Image Gallery plugin from your WordPress site.

Long-Term Security Practices

Regularly monitor and update plugins to prevent security vulnerabilities.
Implement security measures to mitigate Cross-Site Scripting threats.

Patching and Updates

Stay informed about security patches and update your WordPress plugins to the latest secure versions.