Check Point Advisories

Fortinet FortiOS SSL VPN Heap Buffer Overflow (CVE-2018-13383)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-2223
Date Published:	22 Dec 2022
Severity:	Medium
Last Updated:	Monday 25 December, 2023
Source:
Industry Reference:	CVE-2018-13383
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Fortinet FortiOS SSL VPN up to 5.2.14 (including). Fortinet FortiOS SSL VPN from 5.4.0 (including) up to 5.4.12 (including). Fortinet FortiOS SSL VPN from 5.6.0 (including) up to 5.6.10 (including). Fortinet FortiOS SSL VPN from 6.0.0 (including) up to 6.0.4 (including).
Vulnerability Description	A heap buffer overflow vulnerability exists in Fortinet FortiOS SSL VPN. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code 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 Fortinet FortiOS SSL VPN Heap Buffer Overflow (CVE-2018-13383) 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: Fortinet FortiOS SSL VPN Heap Buffer Overflow (CVE-2018-13383)