Authentication Bypass Vulnerability in Netgate pfSense Software
CVE-2023-27100

9.8CRITICAL

Key Information:

Vendor

Netgate

Status
Pfsense Plus
Pfsense
Vendor
CVE Published:
22 March 2023

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-27100?

An improper restriction of excessive authentication attempts in the SSHGuard component of Netgate pfSense Plus and pfSense CE software enables attackers to circumvent brute force protection mechanisms. This vulnerability can be exploited through specially crafted web requests, potentially allowing unauthorized access to network resources.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-27100
Created by DarokNET

References

https://docs.netgate.com/downloads/pfSense-SA-23_05.sshgu...
https://redmine.pfsense.org/issues/13574
http://packetstormsecurity.com/files/171791/pfsenseCE-2.6...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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