CVE-2021-38753 : Security Advisory and Response

An unrestricted file upload on Simple Image Gallery Web App can be exploited to upload a web shell and executed to gain unauthorized access to the server hosting the web app.

Understanding CVE-2021-38753

This vulnerability allows an attacker to upload malicious files and potentially take control of the server.

What is CVE-2021-38753?

CVE-2021-38753 pertains to an unrestricted file upload issue in Simple Image Gallery Web App, enabling unauthorized access to the server.

The Impact of CVE-2021-38753

The impact of this CVE is severe as it facilitates the execution of malicious actions on the server by uploading unauthorized files.

Technical Details of CVE-2021-38753

This section outlines the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises from the ability to upload files without proper validation, leading to unauthorized access and potentially harmful executions.

Affected Systems and Versions

All versions of the Simple Image Gallery Web App are affected by CVE-2021-38753 due to the inherent unrestricted file upload capability.

Exploitation Mechanism

Exploiting this vulnerability involves uploading a malicious web shell to gain unauthorized access and control over the web app's hosting server.

Mitigation and Prevention

To safeguard systems from CVE-2021-38753, immediate action, as well as long-term security practices, and timely patching and updates are crucial.

Immediate Steps to Take

Initiate file upload restrictions, implement proper input validation, and monitor for any suspicious activities immediately.

Long-Term Security Practices

Regular security audits, training, and secure coding practices can prevent similar vulnerabilities in the future.

Patching and Updates

Ensure the Simple Image Gallery Web App is regularly updated to address security vulnerabilities and apply patches promptly.