Check Point Advisories

OpenLDAP slapd Integer Underflow (CVE-2020-36221)

Vulnerability
Protection

Check Point Reference:	CPAI-2020-3675
Date Published:	29 Jan 2023
Severity:	High
Last Updated:	Sunday 29 January, 2023
Source:
Industry Reference:	CVE-2020-36221
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	OpenLDAP Foundation OpenLDAP prior to 2.4.57
Vulnerability Description	A denail-of-service vulnerabilities has been reported in the slapd of OpenLDAP. Successful exploitation could cause integer underflow which leads to denial of service condition.

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 OpenLDAP slapd Integer Underflow (CVE-2020-36221) 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: LDAP Protection Violation.
Attack Information: OpenLDAP slapd Integer Underflow (CVE-2020-36221)