CVE-2021-41326 Explained : Impact and Mitigation

This CVE record describes a vulnerability in MISP that mishandles parameter data in a shell_exec call.

Understanding CVE-2021-41326

This vulnerability can potentially lead to command injection attacks.

What is CVE-2021-41326?

CVE-2021-41326 is a vulnerability in MISP before version 2.4.148, specifically in the app/Lib/Export/OpendataExport.php file. It involves mishandling parameter data used in a shell_exec call.

The Impact of CVE-2021-41326

The vulnerability can be exploited to execute arbitrary commands on the server, leading to potential data breaches, system compromise, and unauthorized access.

Technical Details of CVE-2021-41326

This section provides technical insights into the CVE.

Vulnerability Description

The vulnerability arises from improper handling of parameter data in the shell_exec call within MISP code.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Affected Version: n/a

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating parameters to execute malicious commands through the shell_exec call in MISP.

Mitigation and Prevention

Protect your systems from CVE-2021-41326 using the following strategies.

Immediate Steps to Take

Update MISP to version 2.4.148 or newer to address the vulnerability.
Regularly monitor and review shell commands and user input validation in applications.

Long-Term Security Practices

Implement robust input validation mechanisms to prevent command injection attacks.
Conduct security audits and code reviews to identify and rectify similar vulnerabilities.

Patching and Updates

Stay proactive in installing security patches and updates issued by software vendors.