OS Command Injection in pfBlocker-NG - CVE-2022-31814
Published: December 12, 2023 / Updated: October 25, 2024
Vulnerability identifier: #VU84088
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2022-31814
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Netgate
Affected software:
pfBlocker-NG
pfBlocker-NG
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation when processing HTTP Host header. A remote unauthenticated attacker can send a specially crafted HTTP request to the affected system and execute arbitrary OS commands.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2022-31814
Install updates from vendor's website.
Sources
- https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/
- https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html
- http://packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload.html
- http://packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution.html