CVE-2023-36548 : Security Advisory and Response

A critical vulnerability, CVE-2023-36548, has been identified in Fortinet FortiWLM versions 8.6.0 through 8.6.5 and 8.5.0 through 8.5.4. This vulnerability could allow an attacker to execute unauthorized code or commands through specially crafted HTTP GET request parameters.

Understanding CVE-2023-36548

This section provides an insight into the impact, technical details, and mitigation strategies related to CVE-2023-36548.

What is CVE-2023-36548?

The vulnerability involves an improper neutralization of special elements used in an OS command (OS command injection) in Fortinet FortiWLM. Attackers can exploit this flaw to execute unauthorized code or commands through a specifically crafted HTTP GET request.

The Impact of CVE-2023-36548

With a CVSS v3.1 base score of 9.6, this vulnerability has a critical severity level. It poses a high risk to confidentiality, integrity, and availability, making it crucial for organizations to address promptly.

Technical Details of CVE-2023-36548

Let's delve deeper into the description of the vulnerability, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from improper neutralization of special elements used in an OS command (OS command injection) in Fortinet FortiWLM versions 8.6.0 through 8.6.5 and 8.5.0 through 8.5.4.

Affected Systems and Versions

Fortinet FortiWLM versions 8.6.0 through 8.6.5 and 8.5.0 through 8.5.4 are impacted by this vulnerability, exposing them to potential exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specifically crafted HTTP GET request parameters to the affected FortiWLM systems, allowing them to execute unauthorized code or commands.

Mitigation and Prevention

To safeguard systems from CVE-2023-36548, immediate steps need to be taken along with the adoption of long-term security practices.

Immediate Steps to Take

Users are advised to upgrade their FortiWLM installations to version 8.6.6 or above for versions 8.6.x and version 8.5.5 or above for versions 8.5.x to mitigate the vulnerability.

Long-Term Security Practices

Implementing strict input validation, conducting regular security audits, and staying informed about security updates are essential for maintaining a secure environment.

Patching and Updates

Regularly check for security patches and updates from Fortinet to ensure that your FortiWLM deployment is protected against known vulnerabilities.