Check Point Advisories

VMware Authorization Service User Credential Parsing Denial of Service

Vulnerability
Protection

Check Point Reference:	CPAI-2009-433
Date Published:	31 Jan 2010
Severity:	Critical
Last Updated:	Sunday 31 January, 2010
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A denial of service vulnerability has been reported in the authorization service of some VMware products. The flaw is due to a design error when processing login requests. An attacker can exploit this vulnerability by supplying malicious USER or PASS strings to the target host. Successful exploitation would result on the termination of the "vmware-authd" process causing 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 VMware Authorization Service User Credential Parsing Denial of Service 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: Application Servers Protection Violation.
Attack Information: VMware authorization service user credential parsing denial of service