Check Point Advisories

Samba NetDFS RPC netdfs_io_dfs_EnumInfo_d Handling Heap Overflow (CVE-2007-2446)

Check Point Reference: CPAI-2007-079
Date Published: 17 Jun 2007
Severity: Critical
Last Updated: Sunday 17 June, 2007
Source:
Industry Reference:CVE-2007-2446
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description Samba is an open-source implementation of the network services suite SMB/CIFS.Samba implements many protocols and services, including NetDFS Service component which can be accessed through a Remote Procedure Call (RPC) interface.A buffer overflow vulnerability has been reported in Samba.The vulnerability is due to a boundary error in the Samba NetDFS RPC interface that fails to properly handle specially crafted RPC requests.An attacker may exploit the vulnerability to execute arbitrary code on a target system via a specially crafted RPC request.

Protection Overview

This protection will detect and block malformed RPC requests sent to the NetDFS RPC interface.

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 Samba NetDFS RPC netdfs_io_dfs_EnumInfo_d Handling Heap 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:  MS-RPC over CIFS Enforcement Violation.
Attack Information:  Samba NetDFS RPC netdfs_io_dfs_EnumInfo_d handling heap overflow

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