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1) Overview

Title: Mapserver for Windows (MS4W) Remote Code Execution
Product: Mapserver for Windows (MS4W)
Product URL: http://maptools.org/ms4w/
Vendor: Gateway Geomatics
Affected Versions: <=3.0.4 through 2.0
Unaffected Versions: <2.0
CVE-ID: CVE-2012-2950
Vendor notified: 22/02/2012
Vendor fix: 26/05/2012
Severity:  High
Credit: Mike Arnold
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2) Product information (quoted from website)

"The purpose of this package is to allow all levels of MapServer users to
quickly install a working environment for MapServer development on Windows.
It is also an environment for packaging and distributing MapServer applications."
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3) Advisory detail

A vulnerability has been discovered in the base MS4W package where by an attacker
can perform an LFI based attack and run arbitrary PHP code with SYSTEM level privileges.
This vulnerability is present in MS4W installations with the default configuration.
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4) Proof of Concept

An attacker can use basic TCP/IP tools (e.g netcat) and a web browser to achieve remote code execution.
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4) Solution

Upgrade to version 3.0.6
http://maptools.org/ms4w/index.phtml?page=downloads.html
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Mike Arnold: bruk0ut.sec  .::at::.  gmail com
PGP Key ID: 0xC570B9F4