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Date: Mon, 18 Dec 2017 21:55:15 +0100
From: DefenseCode <>
Subject: [FD] DefenseCode ThunderScan SAST Advisory: WordPress Top-10 Plugin
 SQL Injection Security Vulnerability

DefenseCode ThunderScan SAST Advisory: WordPress Top-10 Plugin
           SQL Injection Security Vulnerability

Advisory ID:    DC-2017-12-003
Advisory Title: WordPress Top-10 Plugin SQL Injection Security Vulnerability
Advisory URL:
Software:       WordPress Top-10 plugin
Language:       PHP
Version:        2.4.2 and below
Vendor Status:  Vendor contacted, update released
Release Date:   2017/12/13
Risk:           High

1. General Overview
During the security audit of Top-10 plugin for WordPress CMS, security
vulnerability was discovered using DefenseCode ThunderScan application
source code security analysis platform.

More information about ThunderScan is available at URL:

2. Software Overview
According to the plugin developers, Top-10 WordPress plugin can count
daily and total visits per post and display the most popular posts
based on the number of views.

According to, it has more than 30,000 active installs.


3. Vulnerability Description
During the security analysis, ThunderScan discovered SQL injection
vulnerability in Top-10 WordPress plugin.

The easiest way to reproduce the vulnerability is to visit the
provided URL while being logged in as administrator or another user
that is authorized to access the plugin settings page. Users that do
not have full administrative privileges could abuse the database
access the vulnerability provides to either escalate their privileges
or obtain and modify database contents they were not supposed to be
able to.

3.1 SQL injection
  Vulnerable Function:  $wpdb->get_results( $sql, 'ARRAY_A' )
  Vulnerable Variable:  $_REQUEST['orderby']
  File:                 Top-10\admin\class-stats.php
  111   $orderby = sanitize_text_field( wp_unslash( $_REQUEST['orderby']
) );
  134   $sql = "SELECT $fields FROM {$table_name} $join WHERE 1=1 $where
$groupby $orderby $limits";
  136   $result = $wpdb->get_results( $sql, 'ARRAY_A' );

4. Solution
After the vulnerability was reported the vendor resolved the security
issues.  All users are strongly advised to update WordPress Top-10
plugin to the latest available version.

5. Credits
Discovered by Neven Biruski using DefenseCode ThunderScan source code
security analyzer.

6. Disclosure Timeline
2017/04/04      Vendor contacted
2017/04/05      Vendor responded
2017/04/07      Update released
2017/12/13      Advisory released to the public

7. About DefenseCode
DefenseCode L.L.C. delivers products and services designed to analyze
and test web, desktop and mobile applications for security

DefenseCode ThunderScan is a SAST (Static Application Security
Testing, WhiteBox Testing) solution for performing extensive security
audits of application source code. ThunderScan SAST performs fast and
accurate analyses of large and complex source code projects delivering
precise results and low false positive rate.

DefenseCode WebScanner is a DAST (Dynamic Application Security
Testing, BlackBox Testing) solution for comprehensive security audits
of active web applications. WebScanner will test a website's security
by carrying out a large number of attacks using the most advanced
techniques, just as a real attacker would.

Subscribe for free software trial on our website .

E-mail: defensecode[at]


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