CVE-2021-23407 : Vulnerability Insights and Analysis

A vulnerability labeled CVE-2021-23407 impacting elFinder.Net.Core versions from 0 to 1.2.4 allows a user-controlled file name to be improperly sanitized, leading to a directory traversal issue.

Understanding CVE-2021-23407

This CVE details a vulnerability found in elFinder.Net.Core versions 0 to 1.2.4, where a flaw in the sanitization process of user-controlled file names can result in a directory traversal.

What is CVE-2021-23407?

CVE-2021-23407 is a directory traversal vulnerability affecting elFinder.Net.Core versions between 0 and 1.2.4. It arises due to inadequate sanitization of user-controlled file names, enabling attackers to traverse directories.

The Impact of CVE-2021-23407

The impact of this CVE is rated as high severity with a CVSS base score of 7.5. Attackers can exploit this vulnerability to access sensitive files and directories, compromising the confidentiality of the system.

Technical Details of CVE-2021-23407

This section delves into the technical aspects of CVE-2021-23407, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in elFinder.Net.Core versions 0 to 1.2.4 stems from the inadequate sanitization of user-controlled file names, creating a pathway for malicious actors to perform directory traversal attacks.

Affected Systems and Versions

elFinder.Net.Core versions 0 to 1.2.4 are impacted by this vulnerability. Users utilizing these versions are at risk of exploitation through unauthorized directory traversal.

Exploitation Mechanism

Attackers can leverage this vulnerability by manipulating file names to navigate through directory structures beyond intended access levels, potentially gaining unauthorized entry to sensitive directories.

Mitigation and Prevention

In this section, we explore the steps to mitigate and prevent exploitation of CVE-2021-23407, focusing on immediate actions and long-term security practices.

Immediate Steps to Take

To mitigate the risk associated with CVE-2021-23407, users are advised to update elFinder.Net.Core to a fixed version, implement proper input validation, and restrict access to sensitive system directories.

Long-Term Security Practices

In the long term, organizations should prioritize secure coding practices, conduct regular security assessments, and stay informed about security updates related to elFinder.Net.Core.

Patching and Updates

It is crucial to install official fixes provided by elFinder.Net.Core to address the directory traversal vulnerability promptly and ensure the security of systems and data.