Check Point Advisories

Cisco IOS XE Authentication Bypass (CVE-2023-20198)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0927
Date Published:	18 Oct 2023
Severity:	Critical
Last Updated:	Tuesday 25 June, 2024
Source:
Industry Reference:	CVE-2023-20198
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Cisco IOS XE 16.12 and later, prior to 16.12.10a Cisco IOS XE 17.3 and later, prior to 17.3.8a Cisco IOS XE 17.6 and later, prior to 17.6.6a Cisco iOS XE 17.9 and later, prior to 17.9.4a
Vulnerability Description	An authentication bypass vulnerability exists in Cisco IOS XE. Successful exploitation of this vulnerability would allow remote attackers to gain unauthorized access into the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Cisco IOS XE Authentication Bypass (CVE-2023-20198) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Cisco Protection Violation.
Attack Information: Cisco IOS XE Authentication Bypass (CVE-2023-20198)