CVE-2021-44171 Explained : Impact and Mitigation

A detailed overview of CVE-2021-44171, an os command injection vulnerability in Fortinet FortiOS.

Understanding CVE-2021-44171

A vulnerability in Fortinet FortiOS allowing attackers to execute privileged commands on a linked FortiSwitch via diagnostic CLI commands.

What is CVE-2021-44171?

CVE-2021-44171 involves an improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiOS versions 6.0.0 through 7.0.3.

The Impact of CVE-2021-44171

The vulnerability allows attackers to execute privileged commands on a linked FortiSwitch, potentially leading to unauthorized access and control.

Technical Details of CVE-2021-44171

Insight into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability results from improper validation of input, enabling malicious actors to inject and execute arbitrary commands on affected systems.

Affected Systems and Versions

Vendor: Fortinet
Product: Fortinet FortiOS
Affected Versions: FortiOS 6.0.0 through 7.0.3

Exploitation Mechanism

Attack Vector: ADJACENT_NETWORK
Attack Complexity: LOW
Privileges Required: LOW
User Interaction: NONE
Impact: HIGH impact on confidentiality, integrity, and availability
Exploit Code Maturity: FUNCTIONAL
Base Score: 9 (CRITICAL)
Temporal Score: 8.8 (HIGH)
Report Confidence: CONFIRMED

Mitigation and Prevention

Preventive measures to address CVE-2021-44171.

Immediate Steps to Take

Apply vendor-provided patches or updates immediately
Restrict network access to vulnerable devices

Long-Term Security Practices

Regularly update and patch all software and firmware
Conduct security audits and penetration testing
Educate users on cybersecurity best practices

Patching and Updates

Fortinet has released patches for affected versions to address the vulnerability