Check Point Advisories

MikroTik RouterOS Buffer Overflow (CVE-2021-41987)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-2213
Date Published:	1 Oct 2024
Severity:	High
Last Updated:	Tuesday 01 October, 2024
Source:
Industry Reference:	CVE-2021-41987
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	MikroTik RouterOS 6.46.8 MikroTik RouterOS 6.47.9 MikroTik RouterOS 6.47.10
Vulnerability Description	A buffer overflow vulnerability exists in MikroTik RouterOS. Successful exploitation of this vulnerability could result in a denial of service or execution of arbitrary code 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 MikroTik RouterOS Buffer Overflow (CVE-2021-41987) 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: Application Servers Protection Violation.
Attack Information: MikroTik RouterOS Buffer Overflow (CVE-2021-41987)