Check Point Advisories

Novell eDirectory LDAP NULL Search Parameter Buffer Overflow (CVE-2008-1809)

Check Point Reference: CPAI-2008-317
Date Published: 6 Apr 2010
Severity: Critical
Last Updated: Tuesday 06 April, 2010
Source:
Industry Reference:CVE-2008-1809
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Novell eDirectory is a set of services based on the Lightweight Directory Access Protocol (LDAP). The eDirectory LDAP server uses TCP port 389 for clear text LDAP communication. There exists a heap buffer overflow vulnerability in Novell eDirectory. The flaw is due to an incorrect calculation when allocating a heap buffer to store search parameters. An unauthenticated remote attacker could exploit this vulnerability by sending a crafted search request to the system. In case of an attack where code injection is not successful, the affected eDirectory service will terminate. If the service is not configured to restart automatically, the service will be unavailable until it is restarted manually. In case of an attack where code injection and execution is successful, the behavior of the system is dependent on the intended purpose of the injected code. Any code injected into the vulnerable component would execute in the security context of the service process. On Windows systems, the service is running as System, by default.

Protection Overview

This protection will detect and block 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 Novell eDirectory LDAP NULL Search Parameter Buffer Overflow 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:  Novell eDirectory LDAP null search parameter buffer overflow

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