Check Point Advisories

PHP LDAP ldap_get_dn Denial of Service (CVE-2018-10548)

Check Point Reference: CPAI-2018-1212
Date Published: 4 Nov 2019
Severity: High
Last Updated: 23 Jan 2020
Industry Reference:CVE-2018-10548
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable? PHP 7.0.x before 7.0.30
PHP 7.1.x before 7.1.17
PHP 7.2.x before 7.2.5
PHP before 5.6.36
Vulnerability Description A denial of service vulnerability has been reported in PHP. The vulnerability is due to a NULL pointer dereference in ldap_get_dn() when performing LDAP queries. Successful exploitation of this vulnerability could lead to denial of service.

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 R80 / R77 / R75

  1. In the IPS tab, click Protections and find the PHP LDAP ldap_get_dn Denial of Service (CVE-2018-10548) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  LDAP Protection Violation.
Attack Information:  PHP LDAP ldap_get_dn Denial of Service (CVE-2018-10548)

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