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Message-ID: <51588D14.2050105@redhat.com>
Date: Sun, 31 Mar 2013 13:23:00 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: "Larry W. Cashdollar" <larry0@...com>,
        Packet Storm <packet@...ketstormsecurity.org>
Subject: Re: Remote command execution in Ruby Gem ldoce 0.0.2

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On 03/31/2013 10:11 AM, Larry W. Cashdollar wrote:
> 
> Remote command execution in Ruby Gem ldoce 0.0.2
> 
> /Larry W. Cashdollar @_larry0 3/25/2013/ 
> ------------------------------------------------------------------------
>
>  Ldoce Ruby Gem:
> 
> Easily interface with the Longman Dictionary of Contemporary
> English API from Ruby:
> 
> NB currently mac only as it depends on the afplay command.
> 
> https://github.com/markburns/ldoce
> 
> Ldoce passes an mp3 url to commandline for audio output of the 
> pronunciation of a dictonary word:
> 
> If the URL or filename for the mp3 files contain shell
> metacharacters code can be executed remotely as the client:
> 
> [./ldoce-0.0.2/lib/ldoce/word.rb]
> 
> if mp3? unless File.exists? filename command = "curl #{mp3_url}
> -silent > {filename}" `{command}` end `afplay #{filename}` end
> 

Just one note, can you include the link (if available) to the gem on
the rubygems.org site (which where most people seem to get their gems).

Please use CVE-2013-1911 for this issue.


- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
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