DefenseCode ThunderScan SAST Advisory WordPress No External Links Plugin Security Vulnerability
Advisory ID: DC-2017-01-022
Advisory Title: WordPress No External Links Plugin Security
Advisory URL: http://www.defensecode.com/advisories.php
Software: WordPress No External Links Plugin
Version: 3.5.17 and below
Vendor Status: Vendor contacted, update released
Release Date: 2017/05/29
More information about ThunderScan is available at URL:
During the security analysis, ThunderScan discovered Cross-Site
Scripting vulnerability in No External Links WordPress plugin.
The Cross-Site Scripting vulnerability can enable the attacker to
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
Variable: $_REQUEST['date1'], $_REQUEST['date2']
125 $date1 = $_REQUEST['date1'];
129 $date2 = $_REQUEST['date2'];
134 <input type="text" name="date1" value="<?php echo $date1; ?>"> <?php _e('to', 'wp-noexternallinks'); ?>
135 <input type="text" name="date2" value="<?php echo $date2; ?>"><input type="submit"
Vendor resolved the security issues after we reported the
vulnerability. All users are strongly advised to update WordPress No
External Links plugin to the latest available version.
Discovered with DefenseCode ThunderScan source code security analyzer
by Neven Biruski.
2017/04/06 Vendor contacted
2017/04/13 Vendor responded, update released
2017/05/29 Advisory released to the public
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