'portable-phpMyAdmin (WordPress Plugin)' Authentication Bypass (CVE-2012-5469)

I. DESCRIPTION

portable-phpMyAdmin doesn't verify an existing WordPress session
(privileged or not) when accessing the plugin file path directly.
Because of how this plugin works, a default installation will provide
a full phpMyAdmin console with the privilege level of the MySQL
configuration of WordPress.

II. TESTED VERSION

1.3.0

III. PoC EXPLOIT

Navigate to http://host/wp-content/plugins/portable-phpmyadmin/wp-pma-mod
and you will be presented with the full portable-phpMyAdmin web
interface without the requirement of a session or any credential.

IV. SOLUTION

Upgrade to version 1.3.1

V. REFERENCES

http://wordpress.org/extend/plugins/portable-phpmyadmin/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5469

VI. TIMELINE

10/13/2012 - Initial developer disclosure
10/14/2012 - Response from developer with commitment to fix the vulnerability
10/31/2012 - Follow-up with developer after no communication or patched release
11/16/2012 - Second attempt to follow-up with developer regarding
progress/timetable
11/26/2012 - Contacted WordPress 'plugins team' about lack of progress
on patched release
11/27/2012 - WordPress 'plugins team' patches software and releases
version 1.3.1
12/12/2012 - Public disclosure