full-disclosure - Ruby gem fastreader-1.0.8 remote code exec

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Message-id: <46bdc228-cd5f-46f7-be03-f5f9c26ff1bf@me.com>
Date: Tue, 12 Mar 2013 23:05:00 +0000 (GMT)
From: "Larry W. Cashdollar" <larry0@...com>
To: full <full-disclosure@...ts.grok.org.uk>
Subject: Ruby gem fastreader-1.0.8 remote code exec

Ruby gem fastreader-1.0.8 remote code exec
3/6/2013

https://rubygems.org/gems/fastreader

if the url contains any ; characters code will be executed as the user when a web browser is launched.

for example if fastreader is fed http://www.g;id;.com id will be executed.

./fastreader-1.0.8/lib/entry_controller.rb

.strip only removes whitespace before and after the URL.

115       # open web browser
116       command = (ENV['FASTREADER_WEB'] || "open") + " {@...rent_entry.url.strip}"
117       `{command}`

Larry W. Cashdollar
@_larry0
http://vapid.dhs.org
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