CVE-2021-41018 : Security Advisory and Response
Learn about CVE-2021-41018, an OS command injection vulnerability in Fortinet FortiWeb versions 6.4.1 and below, 6.3.15 and below. Discover its impact, affected systems, exploitation, and mitigation steps.
A vulnerability in Fortinet FortiWeb allows for unauthorized code execution through crafted HTTP requests.
Understanding CVE-2021-41018
What is CVE-2021-41018?
An improper neutralization of special elements in Fortinet FortiWeb versions 6.4.1 and below, 6.3.15 and below, enables an attacker to execute unauthorized code or commands via manipulated HTTP requests.
The Impact of CVE-2021-41018
The vulnerability has a CVSS base score of 8.8 (High severity) with a high impact on confidentiality, integrity, and availability. Attackers can exploit this flaw to execute unauthorized commands.
Technical Details of CVE-2021-41018
Vulnerability Description
The vulnerability involves improper neutralization of special elements in an os command (OS command injection) in Fortinet FortiWeb versions 6.4.1 and below, 6.3.15 and below.
Affected Systems and Versions
- Fortinet FortiWeb version 6.4.1 and below
- Fortinet FortiWeb version 6.3.15 and below
Exploitation Mechanism
Attackers can leverage crafted HTTP requests to execute unauthorized code or commands on affected Fortinet FortiWeb systems.
Mitigation and Prevention
Immediate Steps to Take
- Update Fortinet FortiWeb to the latest version
- Implement web application firewalls to filter and block malicious HTTP requests
Long-Term Security Practices
- Conduct regular security assessments and penetration testing
- Train staff on secure coding practices
Patching and Updates
Apply security patches promptly to mitigate the vulnerability.