DefenseCode ThunderScan SAST Advisory: WordPress Clean Up Optimizer
Plugin Security Vulnerability
Advisory ID: DC-2017-12-004
Advisory Title: WordPress Clean Up Optimizer Plugin Security Vulnerability
Advisory URL: http://www.defensecode.com/advisories.php
Software: WordPress Clean Up Optimizer plugin
Version: 4.0.0 and below
Vendor Status: Vendor contacted, update released
Release Date: 2017/12/13
More information about ThunderScan is available at URL:
According to wordpress.org, it has more than 7,000 active installs.
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
Due to the missing nonce token, the vulnerable code is also directly
exposed to attack vectors such as Cross Site request forgery (CSRF).
3.1 SQL injection
WHERE 123=123 AND 456=456-- DCDC
587 $table_name_database = isset($_REQUEST["table_name"]) ?
esc_attr($_REQUEST["table_name"]) : "";
594 "SELECT * FROM $table_name_database"
598 "SHOW columns FROM $table_name_database"
After the vulnerability was reported the vendor resolved the security
issues. All users are strongly advised to update WordPress Clean Up
Optimizer plugin to the latest available version.
Discovered by Neven Biruski using DefenseCode ThunderScan source code
2017/04/04 Vendor contacted
2017/04/10 Vendor responded
2017/04/10 Update released
2017/12/13 Advisory released to the public
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.
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