1.第一种情况是 需要将指定的 注入字符串全部替换掉（仅替换注入的字符串为空） 复制代码 代码如下: declare @delStr nvarchar(500) set @delStr='script src=https://www.jb51.net/js/common.js/script' --这里被
1.第一种情况是 需要将指定的 注入字符串全部替换掉（仅替换注入的字符串为空）复制代码 代码如下:declare @delStr nvarchar(500) set @delStr='<script src=https://www.jb51.net/js/common.js></script>' --这里被注入的字段串 /****************************************/ /**********以下为操作实体************/ set nocount on declare @tableName nvarchar(100),@columnName nvarchar(100),@tbID int,@iRow int,@iResult int declare @sql nvarchar(2000) set @iResult=0 declare cur cursor for select name,id from sysobjects where xtype='U' open cur fetch next from cur into @tableName,@tbID while @@fetch_status=0 begin declare cur1 cursor for select name from syscolumns where xtype in (231,167,239,175, 35, 99) and id=@tbID open cur1 fetch next from cur1 into @columnName while @@fetch_status=0 begin set @sql='update [' + @tableName + '] set ['+ @columnName +']= SUBSTRING([' + @columnName + '],' + '1, PATINDEX( ''%' + @delStr + '%'', [' + @columnName + '])-1) + ' + 'SUBSTRING([' + @columnName + '], PATINDEX( ''%' + @delStr + '%'', [' + @columnName + ']) + ' + 'len(''' + @delStr + ''') , datalength([' + @columnName + '])) where ['+@columnName+'] like ''%'+@delStr+'%''' exec sp_executesql @sql set @iRow=@@rowcount set @iResult=@iResult+@iRow if @iRow>0 begin print '表：'+@tableName+',列:'+@columnName+'被更新'+convert(varchar(10),@iRow)+'条记录;' end fetch next from cur1 into @columnName end close cur1 deallocate cur1 fetch next from cur into @tableName,@tbID end print '数据库教程共有'+convert(varchar(10),@iResult)+'条记录被更新!!!' close cur deallocate cur set nocount off
2.第二种是 需要将注入到表中起始位置到最后都删掉。（此种方法直接找到注入的起始位置，后面的全部删掉）复制代码 代码如下:--恢复被注入数据库 --2013-09-26 declare @delStr nvarchar(500) set @delStr='</title><style>.' --被注入的字段串的开始采样，从此位置后面的数据都为注入数据 /**********以下为操作实体************/ set nocount on declare @tableName nvarchar(100),@columnName nvarchar(100),@tbID int,@iRow int,@iResult int declare @sql nvarchar(2000) set @iResult=0 declare cur cursor for select name,id from sysobjects where xtype='U' open cur fetch next from cur into @tableName,@tbID while @@fetch_status=0 begin declare cur1 cursor for select name from syscolumns where xtype in (231,167,239,175, 35, 99) and id=@tbID open cur1 fetch next from cur1 into @columnName while @@fetch_status=0 begin set @sql='update [' + @tableName + '] set ['+ @columnName +']= SUBSTRING([' + @columnName + '],1, PATINDEX( ''%' + @delStr + '%'', [' + @columnName + '])-1) where ['+@columnName+'] like ''%'+@delStr+'%''' exec sp_executesql @sql set @iRow=@@rowcount set @iResult=@iResult+@iRow if @iRow>0 begin print '表：'+@tableName+',列:'+@columnName+'被更新'+convert(varchar(10),@iRow)+'条记录;' end fetch next from cur1 into @columnName end close cur1 deallocate cur1 fetch next from cur into @tableName,@tbID end print '数据库教程共有'+convert(varchar(10),@iResult)+'条记录被更新!!!' close cur deallocate cur set nocount off
