Cross-Site Scripting (XSS) in Photo Gallery WordPress plugin

[High-Tech Bridge Security Research <advisory@xxxxxxxxxxxx>]

Advisory ID: HTB23232
Product: Photo Gallery WordPress plugin
Vendor: http://web-dorado.com/
Vulnerable Version(s): 1.1.30 and probably prior
Tested Version: 1.1.30
Advisory Publication:  September 10, 2014  [without technical details]
Vendor Notification: September 10, 2014 
Vendor Patch: September 10, 2014 
Public Disclosure: October 1, 2014 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2014-6315
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 three vulnerabilities in 
Photo Gallery WordPress plugin, which can be exploited to perform Cross-Site 
Scripting (XSS) attacks.


1) Cross-Site Scripting (XSS) in Photo Gallery WordPress plugin: CVE-2014-6315

1.1 Input passed via the "callback" HTTP GET parameter to 
"/wp-admin/admin-ajax.php" script is not properly sanitised before being 
returned to the user. A remote attacker can trick a logged-in administrator to 
open a specially crafted link and execute arbitrary HTML and script code in 
victim's browser in context of the vulnerable website.

The exploitation example below uses the "alert()" JavaScript function to 
display "immuniweb" word:

http://[host]/wp-admin/admin-ajax.php?action=addImages&width=700&height=550&extensions=jpg&callback=%27%22%3E%3C/script%3E%3Cscript%3Ealert%28/immuniweb/%29;%3C/script%3E

1.2 Input passed via the "dir" HTTP GET parameter to "/wp-admin/admin-ajax.php" 
script is not properly sanitised before being returned to the user. A remote 
attacker can trick a logged-in administrator to open a specially crafted link 
and execute arbitrary HTML and script code in victim's browser in context of 
the vulnerable website.

The exploitation example below uses the "alert()" JavaScript function to 
display "immuniweb" word:

http://[host]/wp-admin/admin-ajax.php?action=addImages&width=700&height=550&extensions=jpg&dir=%27%22%3E%3C/script%3E%3Cscript%3Ealert%28/immuniweb/%29;%3C/script%3E

1.3 Input passed via the "extensions" HTTP GET parameter to 
"/wp-admin/admin-ajax.php" script is not properly sanitised before being 
returned to the user. A remote attacker can trick a logged-in administrator to 
open a specially crafted link and execute arbitrary HTML and script code in 
victim's browser in context of the vulnerable website.

The exploitation example below uses the "alert()" JavaScript function to 
display "immuniweb" word:

http://[host]/wp-admin/admin-ajax.php?action=addImages&width=700&height=550&extensions=%27%22%3E%3C/script%3E%3Cscript%3Ealert%28/immuniweb/%29;%3C/script%3E



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Solution:

Update to Photo Gallery 1.1.31

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References:

[1] High-Tech Bridge Advisory HTB23232 - 
https://www.htbridge.com/advisory/HTB23232 - Cross-Site Scripting (XSS) in 
Photo Gallery WordPress plugin.
[2] Photo Gallery WordPress plugin - http://web-dorado.com/ - This plugin is a 
fully responsive gallery plugin with advanced functionality. It allows having 
different image galleries for your posts and pages. You can create unlimited 
number of galleries, combine them into albums, and provide descriptions and 
tags.
[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.