CVE-2022-31814

critical

Description

pfSense pfBlockerNG through 2.1.4_26 allows remote attackers to execute arbitrary OS commands as root via shell metacharacters in the HTTP Host header. NOTE: 3.x is unaffected.

References

https://github.com/drcayber/RCE

https://github.com/Live-Hack-CVE/CVE-2022-40624

https://github.com/EvergreenCartoons/SenselessViolence

https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/

https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e

https://github.com/pfsense/FreeBSD-ports/pull/1169

https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-53199

https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html

http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html

http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html

Details

Source: Mitre, NVD

Published: 2022-09-05

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H