SB2023021711 - Multiple vulnerabilities in FortiProxy

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Missing cryptographic step (CVE-ID: CVE-2022-29054)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to missing cryptographic steps in the functions that encrypt the DHCP and DNS keys (ddns-key or n-mhae-key). A local user in possession of the encrypted key to decipher it.

2) Improper Privilege Management (CVE-ID: CVE-2022-38378)

The vulnerability allows a remote user to escalate privileges on the device.

The vulnerability exists due to improper privilege management. A remote administrative user with access to the admin profile section (System subsection Administrator Users) can modify their own profile and upgrade their privileges to Read Write via CLI or GUI commands.

3) 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.

4) 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.fortinet.com/psirt/FG-IR-22-080
• https://fortiguard.fortinet.com/psirt/FG-IR-22-346
• https://fortiguard.fortinet.com/psirt/FG-IR-22-362
• https://fortiguard.fortinet.com/psirt/FG-IR-22-391