CVE-2021-40639 : Exploit Details and Defense Strategies

This CVE-2021-40639 article provides details about an improper access control vulnerability in Jfinal CMS 5.1.0 that allows attackers unauthorized access to sensitive information.

Understanding CVE-2021-40639

This section delves into the specifics of the CVE-2021-40639 vulnerability.

What is CVE-2021-40639?

CVE ID: CVE-2021-40639
Description: Improper access control in Jfinal CMS 5.1.0 allows attackers to access sensitive information via /classes/conf/db.properties&config=filemanager.config.js.

The Impact of CVE-2021-40639

Attackers can exploit this vulnerability to gain unauthorized access to sensitive information stored in Jfinal CMS 5.1.0.

Technical Details of CVE-2021-40639

In this section, you'll find detailed technical information about the CVE-2021-40639 vulnerability.

Vulnerability Description

The vulnerability in Jfinal CMS 5.1.0 arises from improper access control mechanisms, enabling attackers to access sensitive data.

Affected Systems and Versions

Affected Product: Jfinal CMS 5.1.0
Vendor: N/A
Affected Version: N/A

Exploitation Mechanism

Attackers exploit the vulnerability by leveraging the improper access control in Jfinal CMS 5.1.0 to access sensitive information via specific URLs.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the exploitation of CVE-2021-40639.

Immediate Steps to Take

Organizations using Jfinal CMS 5.1.0 should restrict access to sensitive files and directories.
Regularly monitor and review access logs to detect any unauthorized access attempts.

Long-Term Security Practices

Implement least privilege access controls to limit user access to only necessary resources.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Ensure that Jfinal CMS is updated to the latest version that includes a fix for the improper access control issue.