RCE in Netgate Pfblockerng
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. NOTE: 3.x is unaffected.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.919 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.919 · newest: 0.919 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- docs.netgate.com/pfsense/en/latest/packages/pfblocker.html (Release Notes, Vendor Advisory)
- www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/ (Technical Description, Exploit, Third Party Advisory)
- packetstormsecurity.com/files/168743/pfSense-pfBlockerNG-2.1.4_26-Shell-Upload… (Exploit, VDB Entry, Third Party Advisory)
- packetstormsecurity.com/files/171123/pfBlockerNG-2.1.4_26-Remote-Code-Execution…
- github.com/pfsense/FreeBSD-ports/pull/1169
- github.com/pfsense/FreeBSD-ports/pull/1169/commits/071bdcf2d918c3e51cde11cf81fb…
Frequently asked questions
- What is CVE-2022-31814?
- CVE-2022-31814 is a critical-severity vulnerability in Netgate Pfblockerng, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-09-05.
- How severe is CVE-2022-31814?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-31814 known to be exploited?
- 29 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.