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: 9.3 [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]
CVE-ID: CVE-2022-31814
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
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.
Affected software
pfBlocker-NG
How to mitigate CVE-2022-31814
Install updates from vendor's website.
Links to Public Exploits and PoC-codes
- Exploit #10681 - pfBlockerNG 2.1.4_26 - Remote Code Execution (RCE) (October 25, 2024)
- Exploit #10396 - CVE-2022-31814 (This script is a proof-of-concept exploit for pfBlockerNG <= 2.1.4_26 that allows for remote code execution. It takes a single target URL or a list of URLs, tries to upload a shell using multiple payloads, executes a command, and then dele (August 16, 2024)
- Exploit #10322 - CVE-2022-31814 (Updated Exploit - pfBlockerNG <= 2.1.4_26 Unauth RCE (CVE-2022-31814)) (August 9, 2024)
- Exploit #9547 - SenselessViolence (CVE-2022-31814 Exploitation Toolkit.) (February 13, 2024)
- Exploit #9423 - pfSense plugin pfBlockerNG unauthenticated RCE as root (December 12, 2023)
External References
- 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