答案:解决方法:
1.厂商补丁:
Microsoft已经为此发布了一个安全公告(MS02-011)以及相应补丁:
MS02-011:Authentication Flaw Could Allow Unauthorized Users To Authenticate To SMTP Service
链接:http://www.microsoft.com/technet/security/bulletin/MS02-011.asp
补丁下载:
(1)、对Windows 2000系统需先安装以下补丁
Microsoft Windows 2000 Server, Professional and Advanced Server:
http://www.microsoft.com/Downloads/details.aspx?displaylang=en&FamilyID=427A3B0A-FF47-4684-8AA3-127EB19EB848
(2)、对NT4.0系统需先安装SP6a补丁
http://www.microsoft.com/downloads/details.aspx?FamilyID=e396d059-e402-46ef-b095-a74399e25737&DisplayLang=en
(3)、请先安装Exchange Server 5.5, Service Pack 4补丁,再安装该漏洞补丁,如下:
Microsoft Exchange Server 5.5, Service Pack 4
http://www.microsoft.com/downloads/details.aspx?FamilyId=A9E872EA-54B0-4179-8AE9-5648BFB46459&displaylang=en
Exchange Server 5.5:
http://www.microsoft.com/Downloads/Release.asp?ReleaseID=33423
2.其它解决方法:
如果您不能立刻安装补丁或者升级,BDNS建议您采取以下措施以降低威胁:
l 如果您不需要提供SMTP服务,关闭此服务。
l 对SMTP服务端口进行访问控制,确信只有合法用户能够访问。
3、EXCHANGE SEVER 5.5 的其它补丁包(根据具体情况选择安装)
http://www.bluedon.com/download/open.asp?id=3412
漏洞附加说明:
发布日期:2002-02-27
更新日期:2002-03-04
受影响系统:
Microsoft Exchange Server 5.5
- Microsoft Windows NT 4.0 SP6a
- - Microsoft Windows NT 4.0 SP6
- - Microsoft Windows NT 4.0 SP5
- - Microsoft Windows NT 4.0 SP4
- - Microsoft Windows NT 4.0 SP3
- - Microsoft Windows NT 4.0 SP2
- - Microsoft Windows NT 4.0 SP1
- - Microsoft Windows NT 4.0
- - Microsoft Windows BackOffice 4.5
- - Microsoft Windows 2000 SP2
- - Microsoft Windows 2000 SP1
- - Microsoft Windows 2000
- Microsoft Exchange Server 5.5SP1
- - Microsoft Windows NT 4.0 SP6a
- - Microsoft Windows NT 4.0 SP6
- - Microsoft Windows NT 4.0 SP5
- - Microsoft Windows NT 4.0 SP4 - - Microsoft Windows NT 4.0 SP3- - Microsoft Windows NT 4.0 SP2
- - Microsoft Windows NT 4.0 SP1
- - Microsoft Windows NT 4.0
- - Microsoft Windows BackOffice 4.5
- - Microsoft Windows 2000 SP2
- - Microsoft Windows 2000 SP1
- - Microsoft Windows 2000
- Microsoft Exchange Server 5.5SP2
- - Microsoft Windows NT 4.0 SP6a
- - Microsoft Windows NT 4.0 SP6
- - Microsoft Windows NT 4.0 SP5
- - Microsoft Windows NT 4.0 SP4
- - Microsoft Windows NT 4.0 SP3
- - Microsoft Windows NT 4.0 SP2
- - Microsoft Windows NT 4.0 SP1
- Microsoft Windows NT 4.0
- - Microsoft Windows BackOffice 4.5
- - Microsoft Windows 2000 SP2
- - Microsoft Windows 2000 SP1
- - Microsoft Windows 2000
- Microsoft Exchange Server 5.5SP3
- - Microsoft Windows NT 4.0 SP6a
- - Microsoft Windows NT 4.0 SP6
- - Microsoft Windows NT 4.0 SP5
- - Microsoft Windows NT 4.0 SP4
- - Microsoft Windows NT 4.0 SP3
- - Microsoft Windows NT 4.0 SP2
- Microsoft Windows NT 4.0 SP1
- -Microsoft Windows NT 4.0
- Microsoft Windows BackOffice 4.5
- Microsoft Windows 2000 SP2
- Microsoft Windows 2000 SP1
- Microsoft Windows 2000
Microsoft Exchange Server 5.5SP4
- Microsoft Windows NT 4.0 SP6a
- Microsoft Windows NT 4.0 SP6
- Microsoft Windows NT 4.0 SP5
- Microsoft Windows NT 4.0 SP4
- Microsoft Windows NT 4.0 SP3
- Microsoft Windows NT 4.0 SP2
- Microsoft Windows NT 4.0 SP1
- Microsoft Windows NT 4.0
- Microsoft Windows BackOffice 4.5
- Microsoft Windows 2000 SP2
- Microsoft Windows 2000 SP1
- Microsoft Windows 2000
Microsoft Windows 2000 SMTP Service
- Microsoft Windows 2000 SP2
- Microsoft Windows 2000 SP1
- Microsoft Windows 2000
漏洞描述:
CVE(CAN) ID: CAN-2002-0054
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 5.5 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。
上一个:网络端口及其详解
下一个:外电介绍清除及其预防震荡波病毒的三种方法