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ChX Security |
Advisory #3 |
==========
-> "WP Comment Remix 1.4.3 Multiple Vulnerabilities" <-
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Advisory Information |
===============
Title: WP Comment Remix 1.4.3 Multiple Vulnerabilities
Author: g30rg3_x <g30rg3x_at_chxsecurity_dot_org>
Advisory URL: http://chxsecurity.org/advisories/adv-3-full.txt
Date of last update: 2008-10-13
CVE Name: --
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Vulnerability Information |
==================
Software: WP Comment Remix
Version: 1.4.3
From: Remote
Severity: Extremely Critical
Impact:
Manipulation of data
Cross-Site Scripting
Type of Advisory: Full Disclosure
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Software Description |
===============
WP Comment Remix adds a plethora of new options and features to
Wordpress. From Reply and Quote links
for commenters, to a full upgrade to the edit comments pages in the
admin panel, WPCR will save you
time and effort when running your blog.
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Vulnerability Description |
==================
WP Comment Remix has multiple vulnerabilities which allow remote
attackers to conduct SQL Injection,
Cross-Site Scripting and Cross-Site Request Forgery attacks.
The SQL Injection is possible due to lack of filtration on the comment
post ID variable in the AJAX
Comments script.
The Cross-Site Scripting is possible due to lack of filtration and
escaping on several stored
options.
The Cross-Site Request Forgery is caused by the lack of the WordPress
Nonces on the options panel form.
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Technical Description |
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* SQL Injection *
Inside the script "ajax_comments.php" (around lines 27 to 29):
/---------------------
$id = $_GET['p'];
$comments = $wpdb->get_results("SELECT * FROM $wpdb->comments WHERE
comment_post_ID = $id AND comment_approved != 'spam' ORDER BY
comment_date DESC");
----------------------/
As you can see in the presented code, the value of $id is taken from
HTTP GET p variable and then $id is later used
inside the SQL Query of get_results method from the $wpdb object
(which allow WordPress plugins developers to pull
multiple row results from the database), so we can inject SQL code and
the data will later be show as comment data
on the script.