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Cross-Site Scripting (XSS) in WP-Cron Dashboard Wordpress plugin

Advisory ID:HTB23189
Product:WP-Cron Dashboard Wordpress plugin
Vendor:OKAMOTO Wataru
Vulnerable Versions:1.1.5 and probably prior
Tested Version:1.1.5
Advisory Publication:December 5, 2013 [without technical details]
Vendor Notification:December 5, 2013
Public Disclosure:December 26, 2013
Latest Update:December 25, 2013
Vulnerability Type:Cross-Site Scripting [CWE-79]
CVE Reference:CVE-2013-6991
Risk Level:Low
CVSSv2 Base Score:2.6 (AV:N/AC:H/Au:N/C:N/I:P/A:N)
Solution Status:Solution Available
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge Security Research Lab discovered vulnerability in WP-Cron Dashboard Wordpress plugin, which can be exploited to perform Cross-Site Scripting (XSS) attacks.

1) Cross-Site Scripting (XSS) in WP-Cron Dashboard Wordpress plugin: CVE-2013-6991
The vulnerability exists due to insufficient sanitisation of user-supplied data in "procname" HTTP POST parameter passed to "/wp-admin/tools.php" script. A remote attacker can trick a logged-in administrator to open a specially crafted link and execute arbitrary HTML and script code in browser in context of the vulnerable website.
The exploitation example below uses the "alert()" JavaScript function to display "immuniweb" word:
<form action="http://[host]/wp-admin/tools.php?page=wp-cron-dashboard" method="post" name="main">
<input type="hidden" name="procname" value='<script>alert("immuniweb");</script>'>
<input type="hidden" name="submit" value='1'>
<input type="submit" id="btn">
</form>


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Solution:
Vendor did not reply to 3 notifications by email, 3 notifications via contact form, 1 notification via twitter, 1 forum thread. Currently we are not aware of any official solution for this vulnerability.

Unofficial patch was developed by High-Tech Bridge Security Research Lab and is available here: https://www.htbridge.com/advisory/HTB23189-patch.zip


References:
[1] High-Tech Bridge Advisory HTB23189 - https://www.htbridge.com/advisory/HTB23189 - Cross-Site Scripting (XSS) in WP-Cron Dashboard Wordpress plugin.
[2] WP-Cron Dashboard Wordpress plugin - http://wordpress.org/plugins/wp-cron-dashboard/ - WP-Cron Dashboard Display for WordPress.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
[5] ImmuniWeb® SaaS - hybrid of manual web application penetration test and cutting-edge vulnerability scanner available online via a Software-as-a-Service (SaaS) model.
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