CVE-2022-30303 : Security Advisory and Response

This article provides detailed information about CVE-2022-30303, a vulnerability affecting FortiWeb versions 7.0.0 through 7.0.1, 6.3.0 through 6.3.19, and 6.4. It allows an authenticated attacker to execute arbitrary shell code as the 'root' user via crafted HTTP requests.

Understanding CVE-2022-30303

This section delves into what CVE-2022-30303 is and its impacts.

What is CVE-2022-30303?

CVE-2022-30303 involves an improper neutralization of special elements used in an OS command ('OS Command Injection') in FortiWeb versions 7.0.0 through 7.0.1, 6.3.0 through 6.3.19, and 6.4. This vulnerability may lead to an authenticated attacker executing arbitrary shell code as the 'root' user through crafted HTTP requests.

The Impact of CVE-2022-30303

The vulnerability poses a high risk as it allows attackers to gain unauthorized access and execute malicious commands with elevated privileges on affected systems.

Technical Details of CVE-2022-30303

This section covers the specifics of the vulnerability, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from the improper handling of special elements in OS commands, paving the way for OS Command Injection on vulnerable FortiWeb versions.

Affected Systems and Versions

FortiWeb versions 7.0.0 through 7.0.1, 6.3.0 through 6.3.19, and all versions of 6.4 are impacted by CVE-2022-30303.

Exploitation Mechanism

An authenticated attacker can exploit this vulnerability by sending crafted HTTP requests that contain malicious code, enabling them to execute arbitrary commands as the 'root' user.

Mitigation and Prevention

In this section, we discuss steps to mitigate the risk posed by CVE-2022-30303 and prevent potential exploits.

Immediate Steps to Take

Upgrade to FortiWeb version 7.0.2 or above
Upgrade to FortiWeb version 6.3.20 or above

Long-Term Security Practices

Implement strict input validation, sanitize user inputs, and regularly update FortiWeb to the latest versions to protect against similar vulnerabilities.

Patching and Updates

Regularly check for security updates and patches released by Fortinet to ensure that your FortiWeb deployment remains secure.