CVE-2022-42471 Explained : Impact and Mitigation

A detailed overview of CVE-2022-42471 highlighting the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2022-42471

CVE-2022-42471 is a vulnerability related to improper neutralization of CRLF sequences in HTTP headers ('HTTP Response Splitting') found in FortiWeb.

What is CVE-2022-42471?

The CVE-2022-42471 vulnerability in FortiWeb versions 7.0.0 through 7.0.2, 6.4.0 through 6.4.2, and 6.3.6 through 6.3.20 may allow an authenticated and remote attacker to inject arbitrary headers.

The Impact of CVE-2022-42471

With a CVSS base score of 5.3 (Medium Severity), this vulnerability can be exploited by an attacker to execute unauthorized code or commands, posing a risk to confidentiality and integrity.

Technical Details of CVE-2022-42471

This section provides insights into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from the improper handling of CRLF sequences in HTTP headers, leading to header injection.

Affected Systems and Versions

FortiWeb versions 7.0.0 through 7.0.2, 6.4.0 through 6.4.2, and 6.3.6 through 6.3.20 are impacted by this vulnerability.

Exploitation Mechanism

An authenticated and remote attacker can exploit this vulnerability to inject arbitrary headers and potentially execute malicious commands.

Mitigation and Prevention

Discover immediate steps to take and long-term security practices to secure your systems against CVE-2022-42471.

Immediate Steps to Take

Upgrade FortiWeb to version 7.2.0 or above
Upgrade FortiWeb to version 7.0.3 or above

Long-Term Security Practices

Implement security best practices such as monitoring and restricting network traffic to mitigate similar risks.

Patching and Updates

Regularly apply security patches and updates provided by Fortinet to address vulnerabilities and enhance system security.