CVE-2020-21554 : Exploit Details and Defense Strategies

A File Deletion vulnerability exists in TinyShop 3.1.1 in the back_list parameter in controllers\admin.php, allowing a malicious user to delete any file such as install.lock to reinstall cms.

Understanding CVE-2020-21554

This CVE involves a vulnerability in TinyShop 3.1.1 that can be exploited by attackers to delete critical files.

What is CVE-2020-21554?

The vulnerability in TinyShop 3.1.1 enables unauthorized users to delete essential files, potentially leading to system compromise.

The Impact of CVE-2020-21554

The exploitation of this vulnerability can result in unauthorized deletion of crucial files, compromising the integrity and security of the affected system.

Technical Details of CVE-2020-21554

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability exists in the back_list parameter in controllers\admin.php of TinyShop 3.1.1, allowing malicious users to delete files like install.lock.

Affected Systems and Versions

Product: TinyShop 3.1.1
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating the back_list parameter to delete critical files, potentially leading to a system compromise.

Mitigation and Prevention

Protect your system from CVE-2020-21554 with the following steps:

Immediate Steps to Take

Disable unnecessary file deletion capabilities.
Implement proper input validation to prevent malicious file deletions.
Monitor file deletion activities for any suspicious behavior.

Long-Term Security Practices

Regularly update and patch the TinyShop application to address known vulnerabilities.
Conduct security audits to identify and mitigate potential security risks.

Patching and Updates

Apply patches and updates provided by TinyShop to fix the vulnerability and enhance system security.