WordPress AffiliateWP 2.0.8 Cross Site Scripting

Type packetstorm
Reporter DefenseCode
Modified 2017-05-27T00:00:00


DefenseCode ThunderScan SAST Advisory  
WordPress AffiliateWP Plugin  
Security Vulnerability  
Advisory ID: DC-2017-05-05  
Advisory Title: WordPress AffiliateWP Plugin Security Vulnerability  
Advisory URL: http://www.defensecode.com/advisories.php  
Software: WordPress AffiliateWP Plugin  
Language: PHP  
Version: 2.0.8 and below (taken from the official GitHub repo)  
Vendor Status: Vendor contacted, update released  
Release Date: 2017/05/24  
Risk: Medium  
1. General Overview  
During the security audit of AffiliateWP 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, AffiliateWP is an easy-to-use,  
reliable WordPress plugin that gives you the affiliate marketing tools  
you need to grow your business and make more money. In 2016 it  
surpassed $500,000 in annual revenue:  
3. Vulnerability Description  
During the security analysis, ThunderScan discovered Cross-Site  
Scripting vulnerability in AffiliateWP WordPress plugin.  
The Cross-Site Scripting vulnerability can enable the attacker to  
construct the URL that contains malicious JavaScript code. If the  
administrator of the site makes a request to such an URL, the  
attacker's code will be executed, with unrestricted access to the  
WordPress site in question. The attacker can entice the administrator  
to visit the URL in various ways, including sending the URL by email,  
posting it as a part of the comment on the vulnerable site or another  
3.1 Cross-Site Scripting  
Vulnerable Function: echo  
Vulnerable Variable: $_REQUEST['filter_from']  
Vulnerable URL:   
571 $from = ! empty( $_REQUEST['filter_from'] ) ?  
$_REQUEST['filter_from'] : '';  
574 echo "<input type='text' class='affwp-datepicker'  
autocomplete='off' name='filter_from' placeholder='" . __( 'From -  
mm/dd/yyyy', 'affiliate-wp' ) . "' value='" . $from . "'/>";  
4. Solution  
Vendor resolved the security issues after we reported the  
vulnerability. All users are strongly advised to update WordPress  
AffiliateWP plugin to the latest available version.  
5. Credits  
Discovered with DefenseCode ThunderScan Source Code Security Analyzer  
by Neven Biruski.  
6. Disclosure Timeline  
2017/05/16 Vendor contacted  
2017/05/16 Vendor responded  
2017/05/17 Update released  
2017/05/24 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  
http://www.defensecode.com/ .  
E-mail: defensecode[at]defensecode.com  
Website: http://www.defensecode.com  
Twitter: https://twitter.com/DefenseCode/