SB2022031507 - Multiple vulnerabilities in pfSense

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control (CVE-ID: CVE-2022-26019)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in services_ntpd_gps.php. A remote administrator can rewrite existing files on the file system and execute arbitrary code on the target system.

2) Input validation error (CVE-ID: CVE-2022-24299)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary commands.

The vulnerability exists due to insufficient validation of user-supplied input within the data_ciphers parameter in the vpn_openvpn_server.php and vpn_openvpn_client.php pages. A remote user can pass specially crafted input to the application and execute arbitrary commands on the target system.

Remediation

Install update from vendor's website.

References

• https://jvn.jp/en/jp/JVN87751554/index.html
• https://docs.netgate.com/downloads/pfSense-SA-22_01.webgui.asc
• https://docs.netgate.com/downloads/pfSense-SA-22_03.webgui.asc