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.