Check Point Advisories

RSA Authentication Agent for Web Buffer Overflow (CVE-2005-1471)

Vulnerability
Protection

Check Point Reference:	CPAI-2005-251
Date Published:	28 Jun 2010
Severity:	Critical
Last Updated:	Monday 28 June, 2010
Source:
Industry Reference:	CVE-2005-1471
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The RSA Authentication Agent for Web for Internet Information Services (IIS) provides protection for selected web pages by securing them with the RSA SecurID authentication mechanism. When a user attempts to access a resource that is secured with the RSA SecurID, the RSA Agent authenticates the user before serving the requested resource. If the authentication is successful, the RSA Agent stores the information in a cookie in the user's browser. The user is granted access to protected web pages until the cookie expires. A buffer overflow vulnerability exists in the RSA Authentication Agent for Microsoft Internet Information Server (IIS). The flaw is triggered when the vulnerable component parses crafted HTTP data. Successful exploitation can allow arbitrary code to be executed with System level privileges on the target system. In a case of an attack where code injection is not successful, the IIS server on which the vulnerable RSA Agent is running, will terminate. If the service is not configured to restart automatically, then its functionality will be unavailable until the server is restarted manually. In a case of an attack where code injection is successful, the behavior of the target is dependent on the inteneded purpose of the injected code. Any code injected into the vulnerable component would execute in the security context of the IIS service process, normally System.

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 RSA Authentication Agent for Web 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: Web Server Enforcement Violation.
Attack Information: RSA Authentication Agent for web buffer overflow