Check Point Advisories

Kerberos Multi-realm KDC NULL Pointer Dereference Denial of Service (CVE-2013-1418)

Vulnerability
Protection

Check Point Reference:	CPAI-2013-3628
Date Published:	6 Jan 2013
Severity:	Critical
Last Updated:	Thursday 09 January, 2025
Source:	CVE-2013-1418
Protection Provided by:	Security Gateway R75
Who is Vulnerable?	MIT Kerberos 1.10.6 and prior MIT Kerberos 1.11.3 and prior
Vulnerability Description	A denial of service vulnerability has been reported in Kerberos. The vulnerability is due to a NULL pointer dereference within the setup_server_realm() function when Kerberos is configured to serve multiple realms. A remote attacker can exploit this vulnerability by sending a malicious request to a vulnerable installation of Kerberos. Successful exploitation will cause the krb5kdc daemon to terminate resulting in a denial of service condition.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your product to the latest update. For information on how to update , go to SBP-2006-05, Protection tab and select the version of your choice.

Security Gateway R75 / R71 / R70

In the IPS tab, click Protections and find the Kerberos Multi-realm KDC NULL Pointer Dereference Denial of Service protection using the Search tool and Edit the protection's settings.
Install policy on all modules.

SmartView Tracker will log the following entries:
Attack Name: Application Servers Protection Violation
Attack Information: Kerberos Multi-realm KDC NULL Pointer Dereference Denial of Service