9.8
CRITICAL
CVE-2023-27100
Netgate pfSense Plus SSHGuard Excessive Authentication Attempt Restriction Bypass
Description

Improper restriction of excessive authentication attempts in the SSHGuard component of Netgate pfSense Plus software v22.05.1 and pfSense CE software v2.6.0 allows attackers to bypass brute force protection mechanisms via crafted web requests.

INFO

Published Date :

March 22, 2023, 11:15 p.m.

Last Modified :

Nov. 21, 2024, 7:52 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2023-27100 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-27100 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Netgate pfsense_plus
1 Pfsense pfsense
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-27100.

URL Resource
http://packetstormsecurity.com/files/171791/pfsenseCE-2.6.0-Protection-Bypass.html
https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.asc Vendor Advisory
https://redmine.pfsense.org/issues/13574 Issue Tracking Patch Vendor Advisory
http://packetstormsecurity.com/files/171791/pfsenseCE-2.6.0-Protection-Bypass.html
https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.asc Vendor Advisory
https://redmine.pfsense.org/issues/13574 Issue Tracking Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
fabdotnet/CVE-2023-27100

None

Python

Updated: 7 months ago
0 stars 0 fork 0 watcher
Born at : May 20, 2024, 1:35 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
DarokNET/CVE-2023-27100

None

Python

Updated: 1 year, 7 months ago
2 stars 0 fork 0 watcher
Born at : April 7, 2023, 7:38 a.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-27100 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-27100 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/171791/pfsenseCE-2.6.0-Protection-Bypass.html
    Added Reference https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.asc
    Added Reference https://redmine.pfsense.org/issues/13574
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 10, 2023

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/171791/pfsenseCE-2.6.0-Protection-Bypass.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 28, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.asc No Types Assigned https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.asc Vendor Advisory
    Changed Reference Type https://redmine.pfsense.org/issues/13574 No Types Assigned https://redmine.pfsense.org/issues/13574 Issue Tracking, Patch, Vendor Advisory
    Added CWE NIST CWE-307
    Added CPE Configuration OR *cpe:2.3:a:netgate:pfsense_plus:22.05.1:*:*:*:*:*:*:* *cpe:2.3:a:pfsense:pfsense:2.6.0:*:*:*:community:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-27100 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-27100 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.36 }} 0.05%

score

0.72916

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: