CNCVE编号：CNCVE-20020023 CVE编号：CAN-2002-0054 安全级别：中 漏洞中文描述： Windows系统的IIS服务器自带了一个SMTP服务器组件。Windows 2000 SMTP服务和Exchange Server 5.6 Internet Mail Connector服务对发信认证的实现上存在漏洞，可以使本地局域网攻击者得到主机的用户级非法访问权限。IIS的SMTP组件支持SMTP AUTH认证命令，它支持NTLM认证选项，目的是允许用户用NTLM认证方式认证自己。然而NTLM支持空会话方式，一个匿名用户可能用这种方式“认证”自己，当这种认证完成以后，用户就被准许转发邮件了。Exchange 2000被证实不受此漏洞影响。 漏洞英文描述： A vulnerability has been reported in the Microsoft Windows 2000 SMTP service and Microsoft Exchange Server 5.5 Internet Mail Connector service. This issue may allow an attacker to gain unauthorized user-level access to the SMTP service on a vulnerable host. The consequences of this issue are that an attacker may potentially exploit this vulnerability to turn the server into a mail relay. Systems running Microsoft Exchange 2000 are not prone to this issue. 漏洞参考： http://archives.neohapsis.com/archives/bugtraq/2002-02/0372.html 系统类型： Win2000/NT 漏洞类型：设计错误