Check Point Advisories

GoodTech SSH Server SFTP Processing Buffer Overflow (CVE-2008-4726)

Vulnerability
Protection

Check Point Reference:	CPAI-2008-364
Date Published:	7 Jul 2010
Severity:	High
Last Updated:	Wednesday 07 July, 2010
Source:
Industry Reference:	CVE-2008-4726
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	There exists a buffer overflow vulnerability in GoodTech SSH Server. The vulnerability is due to a boundary error while handling SFTP commands. A remote attacker can exploit this vulnerability by sending crafted SFTP commands to the target server, potentially causing arbitrary code to be injected and executed in the security context of the service, SYSTEM by default. In a sophisticated attack case where code injection is successful, the behavior of the target is entirely dependent on the intended function of the injected code. The code in such a case would execute within the security context of the affected service, SYSTEM by default. In an attack case where code injection is not successful, the affected service can terminate abnormally and result 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 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

In the IPS tab, click Protections and find the GoodTech SSH Server SFTP Processing Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: SSH Protection Violation.
Attack Information: GoodTech SSH server SFTP processing buffer overflow