Check Point Advisories

Cisco SD-WAN Directory Traversal (CVE-2020-27128)

Vulnerability
Protection

Check Point Reference:	CPAI-2020-4136
Date Published:	25 Feb 2024
Severity:	Medium
Last Updated:	Sunday 25 February, 2024
Source:
Industry Reference:	CVE-2020-27128
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Cisco SD-WAN prior to 20.3.1
Vulnerability Description	A directory traversal vulnerability exists in Cisco SD-WAN. Successful exploitation of this vulnerability would allow a remote attacker to list directories on 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 SD-WAN Directory Traversal (CVE-2020-27128) 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 SD-WAN Directory Traversal (CVE-2020-27128)