CVE-2022-40624

pfSense pfBlockerNG through 2.1.4_27 allows remote attackers to execute arbitrary OS commands as root via the HTTP Host header, a different vulnerability than…

Critical · published December 20, 2022

CVSS v3.1
9.8
EPSS
18%
Percentile
97.2
In the wild
Unconfirmed
What it is

🚨 A twist in the HTTP Host header lets attackers execute commands as root on pfSense pfBlockerNG — talk about a backdoor surprise! 🔥 This vulnerability is like a food delivery driver who takes advantage of a wrong address on the order slip, allowing anyone to request a feast from your kitchen without permission. If exploited, an attacker could waltz in and execute arbitrary commands with root privileges, potentially compromising the entire system. This is not just a little oversight; it’s an open invitation for chaos, putting your data and network security at risk!

Put simply

This vulnerability is like a food delivery driver who takes advantage of a wrong address on the order slip, allowing anyone to request a feast from your kitchen without permission. CVE-2022-40624 allows remote attackers to manipulate the HTTP Host header to execute OS commands as root, bypassing existing security measures. This vulnerability affects pfBlockerNG versions up to 2.1.4_27, making it a critical issue.

What to do

If exploited, an attacker could waltz in and execute arbitrary commands with root privileges, potentially compromising the entire system. This is not just a little oversight; it’s an open invitation for chaos, putting your data and network security at risk! To protect your system, update pfBlockerNG to version 2.1.4_28 or later immediately. Additionally, review your security configurations and monitor logs for any unauthorized access attempts to ensure nothing slips through the cracks! You've got this! Following these steps will help secure your pfSense like a pro. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.18250 · 97.2th percentile
Published
2022-12-20T00:00Z
EPSS history
Timeline
  • 20 DEC 00:00Z
    pfSense pfBlockerNG through 2.1.4_27 allows remote attackers to execute arbitrary OS commands as root via the HTTP Host header, a different vulnerability than…
    cvelistv5