xaviershay-dm-rails 0.10.3.8 MySQL Credential Disclosure

`Title: xaviershay-dm-rails v0.10.3.8 mysql credential exposure  
Author: Larry W. Cashdollar, @_larry0  
Date: 2015-02-17  
Download Site: https://rubygems.org/gems/xaviershay-dm-rails  
Vendor: Martin Gamsjaeger, Dan Kubb  
Vendor Notified: 2015-02-17  
Vendor Contact: notreal [at] rhnh.net  
Description: This gem provides the railtie that allows datamapper to hook into rails3 and thus behave like a rails framework component. Just like activerecord does in rails, dm-rails uses the railtie API to hook into rails. The two are actually hooked into rails almost identically.  
Vulnerability:  
The problem is with the execute function exposing the user credentials to the process table.  
  
Lines 169 - 177 in /datamapper/dm-rails/blob/master/lib/dm-rails/storage.rb:  
  
def execute(statement)  
system(  
'mysql',  
(username.blank? ? '' : "--user=#{username}"),  
(password.blank? ? '' : "--password=#{password}"),  
'-e',  
statement  
)  
end  
  
OSVDB:118579  
Exploit Code:  
• $ while (true) do ps -ef |grep [p]assword; done  
Advisory: http://www.vapid.dhs.org/advisory.php?v=115  
  
  
`