Is Commerce Server different from Internet Information Server?
Yes. Commerce Server uses Internet Information Service (IIS) to provide basic web server capabilities, but also includes additional features and functions. Of particular importance in this case is the fact that the vulnerability lays within a component that ships as part of Commerce Server 2000 but not IIS. Because of this, IIS servers are at no risk from this vulnerability. What is an ISAPI filter? ISAPI (Internet Services Application Programming Interface) is a technology that enables developers to extend the functionality provided by a web server. An ISAPI filter is a dynamic link library (.dll) that uses ISAPI to respond to events that occur on the server. What is the ISAPI filter associated with this vulnerability? The vulnerability lies within the AuthFilter ISAPI filter. AuthFilter provides support for a variety of authentication methods. The vulnerability results because the code that processes the authentication data in several of these methods contains an unchecked buffer. Wh
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