lib/brakeman/checks/check_safe_buffer_manipulation.rb
require 'brakeman/checks/base_check'
#Check for unsafe manipulation of strings
#Right now this is just a version check for
#https://groups.google.com/group/rubyonrails-security/browse_thread/thread/edd28f1e3d04e913?pli=1
class Brakeman::CheckSafeBufferManipulation < Brakeman::BaseCheck
Brakeman::Checks.add self
@description = "Check for Rails versions with SafeBuffer bug"
def run_check
if version_between? "3.0.0", "3.0.11"
suggested_version = "3.0.12"
elsif version_between? "3.1.0", "3.1.3"
suggested_version = "3.1.4"
elsif version_between? "3.2.0", "3.2.1"
suggested_version = "3.2.2"
else
return
end
message = msg(msg_version(rails_version), " has a vulnerability in ", msg_code("SafeBuffer"), ". Upgrade to ", msg_version(suggested_version), " or apply patches")
warn :warning_type => "Cross-Site Scripting",
:warning_code => :safe_buffer_vuln,
:message => message,
:confidence => :medium,
:gem_info => gemfile_or_environment,
:cwe_id => [79]
end
end