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WordPress Easing Slider 2.2.0.6 Cross Site Scripting

WordPress Easing Slider 2.2.0.6 Cross Site Scripting
Posted Feb 11, 2015
Authored by High-Tech Bridge SA | Site htbridge.com

WordPress Easing Slider plugin version 2.2.0.6 suffers from multiple cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss
advisories | CVE-2015-1436
SHA-256 | bc06449f398ab083af89f8a2218533627ea9bb9b6dcf584267e80dbdac8f9c42

WordPress Easing Slider 2.2.0.6 Cross Site Scripting

Change Mirror Download
Advisory ID: HTB23249
Product: Easing Slider WordPress Plugin
Vendor: Easing Slider
Vulnerable Version(s): 2.2.0.6 and probably prior
Tested Version: 2.2.0.6
Advisory Publication: January 21, 2015 [without technical details]
Vendor Notification: January 21, 2015
Vendor Patch: January 22, 2015
Public Disclosure: February 11, 2015
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2015-1436
Risk Level: Low
CVSSv2 Base Score: 2.6 (AV:N/AC:H/Au:N/C:N/I:P/A:N)
Solution Status: Fixed by Vendor
Discovered and Provided: High-Tech Bridge Security Research Lab ( https://www.htbridge.com/advisory/ )

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Advisory Details:

High-Tech Bridge Security Research Lab discovered two XSS vulnerabilities in Easing Slider WordPress plugin, which can be exploited against administrators of WordPress (with the vulnerable plugin) to perform Cross-Site Scripting attacks.

Successful exploitation of the vulnerabilities may allow an attacker to steal administrator’s cookies and gain complete control over the website.

1) Two Reflected XSS Vulnerabilities in Easing Slider WordPress Plugin: CVE-2015-1436

1.1 The vulnerability exists due to insufficient sanitization of input data passed via the "edit" HTTP GET parameter to "/wp-admin/admin.php" script when "page" is set to "easingslider_manage_customizations". 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.

PoC code below uses JS "alert()" function to display "ImmuniWeb" popup:

http://[host]/wp-admin/admin.php?page=easingslider_manage_customizations&edit=%22%3E%3Cscript%3Ealert%28/ImmuniWeb/%29;%3C/script%3E

1.2 The vulnerability exists due to insufficient sanitization of input data passed via the "edit" HTTP GET parameter to "/wp-admin/admin.php" script when "page" is set to "easingslider_edit_sliders". 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.

PoC code below uses JS "alert()" function to display "ImmuniWeb" popup:

http://[host]/wp-admin/admin.php?page=easingslider_edit_sliders&edit=%27%22%3E%3Cscript%3Ealert%28/ImmuniWeb/%29;%3C/script%3E


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Solution:

Update to Easing Slider 2.2.0.7

More Information:
https://wordpress.org/plugins/easing-slider/changelog/

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References:

[1] High-Tech Bridge Advisory HTB23249 - https://www.htbridge.com/advisory/HTB23249 - Two Reflected XSS Vulnerabilities in Easing Slider WordPress Plugin.
[2] Easing Slider Wordpress plugin - http://easingslider.com - Easing Slider is an extremely easy to use slider plugin 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 - https://www.htbridge.com/immuniweb/ - 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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Disclaimer: The information provided in this Advisory is provided "as is" and without any warranty of any kind. Details of this Advisory may be updated in order to provide as accurate information as possible. The latest version of the Advisory is available on web page [1] in the References.
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