The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
WordPress AffiliateWP 2.0.8 Cross Site Scripting
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:
http://www.defensecode.com
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:
https://pippinsplugins.com/2016-in-review/
Homepage:
https://affiliatewp.com
https://github.com/AffiliateWP/AffiliateWP
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
forum.
3.1 Cross-Site Scripting
Vulnerable Function: echo
Vulnerable Variable: $_REQUEST['filter_from']
Vulnerable URL:
http://vulnerablesite.com//wp-admin/admin.php?page=affiliate-wp-referrals&filter_from=%27%3C%2Fscript%3E%3Cscript%3Ealert%2842%29%3C%2Fscript%3E
File:
AffiliateWP-master\includes\admin\referrals\class-list-table.php
---------
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
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
http://www.defensecode.com/ .
E-mail: defensecode[at]defensecode.com
Website: http://www.defensecode.com
Twitter: https://twitter.com/DefenseCode/
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