Evaluator Impact

Per vendor advisory: http://www.cisco.com/en/US/products/products_security_advisory09186a0080a994f6.shtml VPN Authentication Bypass Vulnerability The Cisco ASA or Cisco PIX security appliance can be configured to override an account-disabled indication from a AAA server and allow the user to log on anyway. However, the user must provide the correct credentials in order to login to the VPN. A vulnerability exists in the Cisco ASA and Cisco PIX security appliances where VPN users can bypass authentication when the override account feature is enabled. Note: The override account feature was introduced in Cisco ASA software version 7.1(1). The override account feature is enabled with the override-account-disable command in tunnel-group general-attributes configuration mode, as shown in the following example. The following example allows overriding the "account-disabled" indicator from the AAA server for the WebVPN tunnel group "testgroup": hostname(config)#tunnel-group testgroup type webvpn hostname(config)#tunnel-group testgroup general-attributes hostname(config-tunnel-general)#override-account-disable Note: The override account feature is disabled by default.

References to Advisories, Solutions, and Tools

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Known Affected Software Configurations Switch to CPE 2.2

Change History