Vulnerability · Published Sep 5, 2022 · Assigned by mitre
CVE-2022-31814
Critical 9.8
In plain English
A critical-severity OS command injection in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 91.9% (higher than 99.8% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)91.9%top 0.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling3Metasploit, Nuclei, Public PoC
Official 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.
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html
- https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/
- 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
- https://github.com/pfsense/FreeBSD-ports/pull/1169
- https://github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fbd9b6f0379d7e