Critical severity · published Sep 5, 2022
CVE-2022-31814
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
9.8
CVSS
91.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)91.9% · higher than 100% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PF
Pfblockerng · Netgate
through 2.1.4_26 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-31814
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-31814
Exploit
http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html
packetstormsecurity.com
http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html
Release Notes
https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html
github.com
https://github.com/pfsense/FreeBSD-ports/pull/1169
github.com
https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e
Exploit
https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/