Check Point Advisories

Exim Mail Server Buffer Overflow (CVE-2018-6789)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-1694
Date Published:	21 Oct 2020
Severity:	High
Last Updated:	Thursday 02 November, 2023
Source:
Industry Reference:	CVE-2018-6789
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Exim Mail Server 4.90 and prior
Vulnerability Description	A buffer overflow vulnerability exists in Exim Mail Server. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system or cause application crashes.

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 Exim Mail Server Buffer Overflow (CVE-2018-6789) 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: SMTP Protection Violation.
Attack Information: Exim Mail Server Buffer Overflow (CVE-2018-6789)