CVE-2018-19908 : Security Advisory and Response

A vulnerability was found in versions of MISP 2.4.9x up to 2.4.99, allowing authenticated users to execute arbitrary commands.

Understanding CVE-2018-19908

This CVE involves a security issue in the STIX 1 import code of MISP versions 2.4.9x to 2.4.99, potentially leading to command execution by manipulating file names.

What is CVE-2018-19908?

The vulnerability in the app/Model/Event.php file of MISP versions 2.4.9x to 2.4.99 allows authenticated users to run arbitrary commands by altering the original filename during STIX import.

The Impact of CVE-2018-19908

The exploitation of this vulnerability by malicious users can result in the execution of unauthorized commands within the system, posing a significant security risk.

Technical Details of CVE-2018-19908

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The issue arises from the unescaped filename string used in constructing a shell command within the STIX 1 import code of MISP versions 2.4.9x to 2.4.99.

Affected Systems and Versions

Versions of MISP 2.4.9x up to 2.4.99

Exploitation Mechanism

An authenticated user can exploit the vulnerability by modifying the original filename of the STIX import to execute arbitrary commands.

Mitigation and Prevention

Protective measures to address and prevent the exploitation of CVE-2018-19908.

Immediate Steps to Take

Update MISP to version 2.4.99 or later to mitigate the vulnerability.
Monitor system logs for any suspicious activities related to file name manipulation.

Long-Term Security Practices

Implement strict input validation to prevent unauthorized characters in filenames.
Conduct regular security audits and penetration testing to identify and address potential vulnerabilities.

Patching and Updates

Apply patches and updates provided by MISP promptly to ensure the security of the system.