DefenseCode ThunderScan SAST Advisory
      WordPress All In One Schema.org Rich Snippets Plugin
                      Security Vulnerability


Advisory ID:    DC-2017-01-002
Advisory Title: WordPress All In One Schema.org Rich Snippets Plugin
 Security Vulnerability
Advisory URL:     https://www.defensecode.com/advisories.php
Software:         WordPress All In One Schema.org Rich Snippets Plugin
Language:        PHP
Version:        1.4.1 and below
Vendor Status:    Vendor contacted, update released
Release Date:    2017/05/24
Risk:            Medium



1. General Overview
===================
During the security audit of All In One Schema.org Rich Snippets
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:
https://www.defensecode.com


2. Software Overview
====================
According to the developers, All In One Schema.org Rich Snippets is a
WordPress plugin that is made to boost CTR, improve SEO and rankings,
and support most of the content type. The authors claim it works
perfectly with Google, Bing, Yahoo & Facebook.

According to wordpress.org, it has more than 50,000 active installs.

Homepage:
https://wordpress.org/plugins/all-in-one-schemaorg-rich-snippets/
https://www.brainstormforce.com/


3. Vulnerability Description
==================================
During the security analysis, ThunderScan discovered Cross-Site
Scripting vulnerability in All In One Schema.org Rich Snippets
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
forum.

3.1 Cross-Site Scripting
  Vulnerable Function:    echo()
  Vulnerable Variable:    $_GET['bsf_send_label']
  Vulnerable URL:       
https://vulnerablesite.com/wp-admin/admin.php?page=rich_snippet_dashboard&bsf_force_send=true&bsf_send_label=<%2Fscript><script>alert(1)<%2Fscript>
  File:                    all-in-one-schemaorg-rich-snippets\init.php
  ---------
    466    $label = $_GET['bsf_send_label'];
    ...
    471    $('td.savesend input').val('<?php echo $label; ?>');
  ---------
 

4. Solution
===========
Vendor resolved the security issues after we reported the
vulnerability. All users are strongly advised to update WordPress All
In One Schema.org Rich Snippets plugin to the latest available version


5. Credits
==========
Discovered with DefenseCode ThunderScan Source Code Security Analyzer
by Neven Biruski.

 
6. Disclosure Timeline
======================
2017/03/28    Vendor contacted
2017/03/29    Vendor responded
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
vulnerabilities.

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
https://www.defensecode.com/ .

E-mail: defensecode[at]defensecode.com

Website: https://www.defensecode.com
Twitter: https://twitter.com/DefenseCode/