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htbridgeHigh-Tech BridgeHTB23234
HistorySep 17, 2014 - 12:00 a.m.

Reflected Cross-Site Scripting (XSS) in EWWW Image Optimizer WordPress Plugin

2014-09-1700:00:00
High-Tech Bridge
www.htbridge.com
27

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

0.003 Low

EPSS

Percentile

65.8%

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

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

0.003 Low

EPSS

Percentile

65.8%

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