sql - Union to handle NULL values - Stack Overflow ... count(*),concat((select ( select concat(0x7e,0x27,Hex(cast(user() as char)),0x27
What I would like to know why "999999.9", what is "0x39313335313435363237322e39". When this attack works what information would the hackers have or edits would they have done to the database. Last could this attack run over and over again bring down/crash the server?
http://www.itamed.com/mcms/itamedt/content.cfm?pulldata=scmsmembers.cfm&function=members&perform=memberappita&entity_id=11+limit+0+UNION+SELECT+1,2,concat_ws(0x3a,user(),version
On my site, for instance, it's entirely safe to fail any request with the string 'concat' or %20union' or 'information_schema'. Indeed, I can even ban any IP that so much as bothers to attempt a request including such strings.
The used SELECT statement, referer: http://site.com/index.php?page=shop.browse&category_id=25&option...
+AND(SELECT COUNT(*) FROM (SELECT 1 UNION SELECT null UNION SELECT !1)x GROUP by CONCAT((SELECT version() FROM information_schema.tables LIMIT 0,1),FLOOR(RAND(0)*2))). URL will look like
...all select id =null union all select id =1 +and+ false + union +all +select id = 9999 union all select +.
отображает имя автора новости по передаваемому идентификатору id только при условии, что имя начинается с буквы а, и внедрение кода с использованием оператора UNION затруднительно. В таких случаях злоумышленниками используется метод экранирования части...
cast bar48 sec ago.