CVE-2021-23340 : What You Need to Know

A Local File Inclusion vulnerability was discovered in the package pimcore/pimcore before version 6.8.8, specifically in the downloadCsvAction function of the CustomReportController class. This vulnerability allows an authenticated user to exploit the endpoint and potentially gain unauthorized access.

Understanding CVE-2021-23340

This CVE highlights a critical security issue in Pimcore's CustomReportController class that could be exploited by attackers to perform local file inclusion attacks.

What is CVE-2021-23340?

The vulnerability in CVE-2021-23340 allows an authenticated user to manipulate the endpoint and exploit the local file inclusion vulnerability due to unsanitized input, potentially leading to unauthorized access to sensitive information.

The Impact of CVE-2021-23340

With a CVSS base score of 7.1 (High Severity), this CVE poses a significant threat as it compromises confidentiality and could potentially allow attackers to access critical files and data.

Technical Details of CVE-2021-23340

The technical details of CVE-2021-23340 include vulnerability descriptions, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability exists in the downloadCsvAction function of the CustomReportController class, allowing attackers to exploit a local file inclusion vulnerability by manipulating the exportFile variable.

Affected Systems and Versions

The vulnerability affects versions of pimcore/pimcore prior to 6.8.8, making these versions susceptible to the local file inclusion exploit.

Exploitation Mechanism

By sending a crafted GET request to the specific endpoint, an authenticated user can abuse the unsanitized exportFile variable to achieve a local file inclusion attack.

Mitigation and Prevention

To address CVE-2021-23340, users and administrators should take immediate steps, implement long-term security practices, and apply relevant patches and updates.

Immediate Steps to Take

Ensure access controls are in place, monitor and restrict user input, and consider temporary workarounds to mitigate the risk of exploitation.

Long-Term Security Practices

Enhance code review processes, provide security awareness training, and continuously monitor and update systems to prevent similar vulnerabilities in the future.

Patching and Updates

It is crucial to upgrade to version 6.8.8 or newer to eliminate the Local File Inclusion vulnerability in Pimcore. Regularly check for security advisories and apply patches promptly.