WordPress EWWW Image Optimizer 2.0.1 Cross Site Scripting Vulnerability

Product: EWWW Image Optimizer WordPress plugin
Vendor: Shane Bishop
Vulnerable Version(s): 2.0.1 and probably prior
Tested Version: 2.0.1
Advisory Publication:  September 17, 2014  [without technical details]
Vendor Notification: September 17, 2014 
Vendor Patch: September 24, 2014 
Public Disclosure: October 8, 2014 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2014-6243
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 vulnerability in EWWW Image Optimizer WordPress plugin, which can be exploited to perform Cross-Site Scripting (XSS) attacks against administrator of a WordPress website with vulnerable plugin.


1) Reflected Cross-Site Scripting (XSS) in EWWW Image Optimizer WordPress plugin: CVE-2014-6243

Input passed via the "page" HTTP GET parameter to "/wp-admin/options-general.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 browser in context of the vulnerable website.

The exploitation example below uses the "alert()" JavaScript function to display administrator's cookies:

http://wordpress/wp-admin/options-general.php?page=ewww-image-optimizer/ewww-image-optimizer.php&pngout=failed&error=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E



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Solution:

Update to EWWW Image Optimizer 2.0.2.

More Information:
https://wordpress.org/plugins/ewww-image-optimizer/changelog/

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