SB2023021709 - Several vulnerabilities in FortiOS

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) HTTP response splitting (CVE-ID: CVE-2022-42472)

The vulnerability allows a remote user to perform HTTP splitting attacks.

The vulnerability exists due to software does not correctly process CRLF character sequences. A remote user can send specially crafted request containing CRLF sequence and inject arbitrary HTTP headers.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

2) Path traversal (CVE-ID: CVE-2022-41335)

The vulnerability allows a remote user to compromise the affected device.

The vulnerability exists due to input validation error when processing directory traversal sequences within the administrative interface. A remote authenticated user can send a specially crafted HTTP request and read or write arbitrary files on the system.

Remediation

Install update from vendor's website.

References

• https://fortiguard.com/psirt/FG-IR-22-362
• https://fortiguard.com/psirt/FG-IR-22-391