Check Point Advisories

Juniper JUNOS Arbitrary File Write (CVE-2023-36844)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0745
Date Published:	13 Sep 2023
Severity:	Medium
Last Updated:	Wednesday 13 September, 2023
Source:
Industry Reference:	CVE-2023-36844
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Juniper JUNOS prior to 20.4 Juniper JUNOS 20.4 Juniper JUNOS 20.4 R1 Juniper JUNOS 20.4 R1-S1 Juniper JUNOS 20.4 R2 Juniper JUNOS 20.4 R2-S1 Juniper JUNOS 20.4 R2-s2 Juniper JUNOS 20.4 R3 Juniper JUNOS 20.4 R3-s1 Juniper JUNOS 20.4 R3-S2 Juniper JUNOS 20.4 R3-S3 Juniper JUNOS 20.4 R3-S4 Juniper JUNOS 20.4 R3-S5 Juniper JUNOS 20.4 R3-S6 Juniper JUNOS 20.4 R3-S7 Juniper JUNOS 21.1 R1 Juniper JUNOS 21.1 R1-S1 Juniper JUNOS 21.1 R2 Juniper JUNOS 21.1 R2-S1 Juniper JUNOS 21.1 R2-S2 Juniper JUNOS 21.1 R3 Juniper JUNOS 21.1 R3-S1 Juniper JUNOS 21.1 R3-S2 Juniper JUNOS 21.1 R3-S3 Juniper JUNOS 21.1 R3-S4 Juniper JUNOS 21.1 R3-S5 Juniper JUNOS 21.2 Juniper JUNOS 21.2 R1 Juniper JUNOS 21.2 R1-S1 Juniper JUNOS 21.2 R1-S2 Juniper JUNOS 21.2 R2 Juniper JUNOS 21.2 R2-S1 Juniper JUNOS 21.2 R2-S2 Juniper JUNOS 21.2 R3 Juniper JUNOS 21.2 R3-s1 Juniper JUNOS 21.2 R3-S2 Juniper JUNOS 21.2 R3-S3 Juniper JUNOS 21.2 R3-S4 Juniper JUNOS 21.2 R3-S5 Juniper JUNOS 21.3 - Juniper JUNOS 21.3 R1 Juniper JUNOS 21.3 R1-S1 Juniper JUNOS 21.3 R1-S2 Juniper JUNOS 21.3 R2 Juniper JUNOS 21.3 R2-S1 Juniper JUNOS 21.3 R2-S2 Juniper JUNOS 21.3 R3 Juniper JUNOS 21.3 R3-S1 Juniper JUNOS 21.3 R3-S2 Juniper JUNOS 21.3 R3-S3 Juniper JUNOS 21.3 R3-S4 Juniper JUNOS 21.4 - Juniper JUNOS 21.4 R1 Juniper JUNOS 21.4 R1-S1 Juniper JUNOS 21.4 R1-S2 Juniper JUNOS 21.4 R2 Juniper JUNOS 21.4 R2-S1 Juniper JUNOS 21.4 R2-S2 Juniper JUNOS 21.4 R3 Juniper JUNOS 21.4 R3-S1 Juniper JUNOS 21.4 R3-S2 Juniper JUNOS 21.4 R3-S3 Juniper JUNOS 21.4 R3-S4 Juniper JUNOS 22.1 R1 Juniper JUNOS 22.1 R1-S1 Juniper JUNOS 22.1 R1-S2 Juniper JUNOS 22.1 R2 Juniper JUNOS 22.1 R2-S1 Juniper JUNOS 22.1 R2-S2 Juniper JUNOS 22.1 R3 Juniper JUNOS 22.1 R3-S1 Juniper JUNOS 22.1 R3-S2 Juniper JUNOS 22.2 R1 Juniper JUNOS 22.2 R1-S1 Juniper JUNOS 22.2 R1-S2 Juniper JUNOS 22.2 R2 Juniper JUNOS 22.2 R2-S1 Juniper JUNOS 22.2 R2-S2 Juniper JUNOS 22.2 R3 Juniper JUNOS 22.2 R3-S1 Juniper JUNOS 22.3 R1 Juniper JUNOS 22.3 R1-S1 Juniper JUNOS 22.3 R1-S2 Juniper JUNOS 22.3 R2 Juniper JUNOS 22.3 R2-S1 Juniper JUNOS 22.4 R1 Juniper JUNOS 22.4 R1-S1 Juniper JUNOS 22.4 R1-S2 Juniper JUNOS 22.4 R2
Vulnerability Description	An arbitrary file write vulnerability exists in Juniper JUNOS. Successful exploitation could result in arbitrary file overwrite in the target user's 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 Juniper JUNOS Arbitrary File Write (CVE-2023-36844) 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: Web Server Enforcement Violation.
Attack Information: Juniper JUNOS Arbitrary File Write (CVE-2023-36844)