Check Point Advisories

MIT Kerberos kadmind RPC Library RPCSEC_GSS Authentication Buffer Overflow (CVE-2007-3999)

Check Point Reference: CPAI-2007-126
Date Published: 6 Sep 2007
Severity: Critical
Last Updated: Thursday 06 September, 2007
Source:
Industry Reference:CVE-2007-3999
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description Kerberos is a protocol suite that provides authenticated communication between two points on a network. The Kerberos V5 administration server utilizes the encrypted SUN-RPC protocol to communicate with its remote clients. A buffer overflow vulnerability has been reported in the Kerberos Administration Server (kadmind). A remote attacker may exploit this vulnerability via a specially crafted RPC request sent to the kadmind daemon. Successful exploitation may allow execution of arbitrary code on the vulnerable system.

Protection Overview

This protection will detect and block malformed RPC requests sent to the kadmind daemon.

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 / R71 / R70 / R65

  1. In the IPS tab, click Protections and find the MIT Kerberos kadmind RPC Library RPCSEC_GSS Authentication 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:  SUN-RPC Enforcement Protection.
Attack Information:  MIT Kerberos kadmind RPC library RPCSEC_GSS authentication buffer overflow

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