CVE-2021-24022 : Vulnerability Insights and Analysis

A buffer overflow vulnerability in FortiAnalyzer and FortiManager CLI versions may allow an attacker to perform a Denial of Service attack. Here's what you need to know about CVE-2021-24022.

Understanding CVE-2021-24022

This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-24022?

The CVE-2021-24022 vulnerability exists in Fortinet's FortiAnalyzer and FortiManager CLI versions, allowing a local attacker to initiate a Denial of Service attack by exploiting a buffer overflow issue.

The Impact of CVE-2021-24022

With a CVSS base score of 6.1 (Medium severity), this vulnerability poses a significant risk. It can lead to high impacts on confidentiality, integrity, and availability, requiring immediate attention from affected users.

Technical Details of CVE-2021-24022

Let's delve into the specifics of the vulnerability to better understand how it operates and its potential risks.

Vulnerability Description

The buffer overflow vulnerability in FortiAnalyzer and FortiManager CLI versions, particularly 6.4.5 and below, 6.2.7 and below, and 6.0.x, allows an authenticated local attacker to execute a DoS attack using the

diagnose system geoip-city

command with a large IP value.

Affected Systems and Versions

Products from Fortinet, including FortiAnalyzer 6.4.5 and below, 6.2.7 and below, 6.0.x, and FortiManager 6.4.5 and below, 6.2.7 and below, 6.0.x, are vulnerable to this exploit.

Exploitation Mechanism

The vulnerability can be exploited locally by an authenticated attacker through specific CLI commands, potentially leading to a Denial of Service situation.

Mitigation and Prevention

To address CVE-2021-24022 effectively, users must take immediate steps and adopt long-term security practices to safeguard their systems and data.

Immediate Steps to Take

Users are advised to apply recommended patches or workarounds provided by Fortinet to mitigate the vulnerability's impact.

Long-Term Security Practices

Implementing robust security measures and regular security updates can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for security updates and patches released by Fortinet to address vulnerabilities like CVE-2021-24022 and ensure a secure environment.