gOxiA=苏繁=SuFan Blog

使用系统帐户登陆查询分析器
运行以下脚本
use master
exec sp_dropextendedproc 'xp_cmdshell'
exec sp_dropextendedproc 'xp_dirtree'
exec sp_dropextendedproc 'xp_enumgroups'
exec sp_dropextendedproc 'xp_fixeddrives'
exec sp_dropextendedproc 'xp_loginconfig'
exec sp_dropextendedproc 'xp_enumerrorlogs'
exec sp_dropextendedproc 'xp_getfiledetails'
exec sp_dropextendedproc 'Sp_OACreate'
exec sp_dropextendedproc 'Sp_OADestroy'
exec sp_dropextendedproc 'Sp_OAGetErrorInfo'
exec sp_dropextendedproc 'Sp_OAGetProperty'
exec sp_dropextendedproc 'Sp_OAMethod'
exec sp_dropextendedproc 'Sp_OASetProperty'
exec sp_dropextendedproc 'Sp_OAStop'
exec sp_dropextendedproc 'Xp_regaddmultistring'
exec sp_dropextendedproc 'Xp_regdeletekey'
exec sp_dropextendedproc 'Xp_regdeletevalue'
exec sp_dropextendedproc 'Xp_regenumvalues'
exec sp_dropextendedproc 'Xp_regread'
exec sp_dropextendedproc 'Xp_regremovemultistring'
exec sp_dropextendedproc 'Xp_regwrite'
drop procedure sp_makewebtask
go

如果要恢复

恢复

use master
exec sp_addextendedproc xp_cmdshell,'xp_cmdshell.dll'
exec sp_addextendedproc xp_dirtree,'xpstar.dll'
exec sp_addextendedproc xp_enumgroups,'xplog70.dll'
exec sp_addextendedproc xp_fixeddrives,'xpstar.dll'
exec sp_addextendedproc xp_loginconfig,'xplog70.dll'
exec sp_addextendedproc xp_enumerrorlogs,'xpstar.dll'
exec sp_addextendedproc xp_getfiledetails,'xpstar.dll'
exec sp_addextendedproc sp_OACreate,'odsole70.dll'
exec sp_addextendedproc sp_OADestroy,'odsole70.dll'
exec sp_addextendedproc sp_OAGetErrorInfo,'odsole70.dll'
exec sp_addextendedproc sp_OAGetProperty,'odsole70.dll'
exec sp_addextendedproc sp_OAMethod,'odsole70.dll'
exec sp_addextendedproc sp_OASetProperty,'odsole70.dll'
exec sp_addextendedproc sp_OAStop,'odsole70.dll'
exec sp_addextendedproc xp_regaddmultistring,'xpstar.dll'
exec sp_addextendedproc xp_regdeletekey,'xpstar.dll'
exec sp_addextendedproc xp_regdeletevalue,'xpstar.dll'
exec sp_addextendedproc xp_regenumvalues,'xpstar.dll'
exec sp_addextendedproc xp_regread,'xpstar.dll'
exec sp_addextendedproc xp_regremovemultistring,'xpstar.dll'
exec sp_addextendedproc xp_regwrite,'xpstar.dll'
go

为了防止匿名访问，请禁用空会话。空会话是未经身份验证或匿名的用户在两台计算机间建立的会话。如果不禁用空会话，攻击者便可匿名（即，不需要进行身份验证）连接到服务器。

攻击者建立空会话后即可开始实施各种攻击，包括用于从目标计算机获取系统相关信息的枚举。可通过空会话返回的信息类型包括：域和信任的详细信息、共享、用户信息（包括组和用户权限）、注册表项及其他。请禁用它们，因为它们代表着重大的安全威胁。

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