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Date: Mon, 7 Jul 2014 14:15:00 -0400 (EDT)
From: larry0@...com (Larry W. Cashdollar)
To: <oss-security@...ts.openwall.com>
Subject: Vulnerability Report for Ruby Gem ciborg-3.0.0
Title: Vulnerability Report for Ruby Gem ciborg-3.0.0
Author: Larry W. Cashdollar, @_larry0
Date: 06/01/2014
OSVDB: 108586
CVE:Please Assign
Download: http://rubygems.org/gems/ciborg
Gem Author: commoncode@...otallabs.com
From: ./ciborg-3.0.0/chef/travis-cookbooks/ci_environment/perlbrew/recipes/default.rb
There is a /tmp file race condition when creating /tmp/perlbrew-installer if a malicious local user creates the file first they can overwrite the contents with their own code executing it as the ciborg process owner.
014: curl -s https://raw.github.com/gugod/App-perlbrew/master/perlbrew-install -o /tmp/perlbrew-installer
15: chmod +x /tmp/perlbrew-installer
16: /tmp/perlbrew-installer
Advisory: http://www.vapid.dhs.org/advisories/ciborg-3.0.0.html
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