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Date: Mon, 30 Oct 2017 07:10:29 +0000
From: <nicolas.buzy-debat@...nge.com>
To: "fulldisclosure@...lists.org" <fulldisclosure@...lists.org>
Subject: [FD] [CVE-2017-15867] Multiple Cross-Site Scripting (XSS)
 vulnerabilities in User Login History Wordpress Plugin

Product: User Login History Wordpress Plugin - https://wordpress.org/plugins/user-login-history/
Vendor: Er Faiyaz Alam
Tested version: 1.5.2
CVE ID: CVE-2017-15867

** CVE description **
Multiple cross-site scripting (XSS) vulnerabilities in the user-login-history plugin through 1.5.2 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) date_from, (2) date_to, (3) user_id, (4) username, (5) country_name, (6) browser, (7) operating_system, or (8) ip_address parameter to admin/partials/listing/listing.php.

** Technical details **
The above-mentioned HTTP GET parameters are directly put into the value attribute of an HTML form field without proper sanitization. An attacker can close the HTML input tag with the "> (%22%3E) expression and inject arbitrary HTML/JavaScript code.

Example of the vulnerable code with the date_from parameter (line 21):
<td><input readonly="readonly" autocomplete="off" placeholder="<?php _e("From", "user-login-history") ?>" id="date_from" name="date_from" value="<?php echo isset($_GET['date_from']) ? $_GET['date_from'] : "" ?>" class="textfield-bg"></td>

** Proof of Concept **
Example using the user_id parameter:
http://<host>/wordpress/wp-admin/admin.php?page=user-login-history&user_id=%22%3E%3Cscript%3Ealert%28document.cookie%29%3B%3C%2Fscript%3E

** Solution **
Update to version 1.6.

** Timeline **
15/10/2017: vendor contacted
15/10/2017: vendor acknowledgment
18/10/2017: fix pushed to GitHub
30/10/2017: fixed release available on WordPress Plugins Store.

** Credits **
Vulnerability discovered by Nicolas Buzy-Debat working at Orange Cyberdefense Singapore (CERT-LEXSI).

** References **
- WordPress-plugin-user-login-history GitHub : error log and xss and some minor improvements
https://github.com/faiyazalam/WordPress-plugin-user-login-history/commit/519341a7dece59e2c589b908a636e6cf12a61741
--
Best Regards,

Nicolas Buzy-Debat
Orange Cyberdefense Singapore (CERT-LEXSI)
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