Added workaround for a Ruby BigDecimal bug, CVE-2009-1904. (#3475)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2790 e93f8b46-1217-0410-a6f0-8f06a7374b81
pull/351/head
Eric Davis 16 years ago
parent b3afde14fa
commit 2221d68c4d
  1. 30
      config/initializers/bigdecimal-segfault-fix.rb

@ -0,0 +1,30 @@
# Copyright (c) 2009 Michael Koziarski <michael@koziarski.com>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
require 'bigdecimal'
alias BigDecimalUnsafe BigDecimal
# This fixes CVE-2009-1904 however it removes legitimate functionality that your
# application may depend on. You are *strongly* advised to upgrade your ruby
# rather than relying on this fix for an extended period of time.
def BigDecimal(initial, digits=0)
if initial.size > 255 || initial =~ /e/i
raise "Invalid big Decimal Value"
end
BigDecimalUnsafe(initial, digits)
end
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