- CVE-2009-4492 ruby WEBrick log escape sequence (bug 554485)
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ruby-1.8.6.x-CVE-2009-4492.patch
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134
ruby-1.8.6.x-CVE-2009-4492.patch
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Index: lib/webrick/httpstatus.rb
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===================================================================
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--- lib/webrick/httpstatus.rb (revision 26273)
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+++ lib/webrick/httpstatus.rb (revision 26274)
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@@ -12,7 +12,17 @@
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module HTTPStatus
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- class Status < StandardError; end
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+ class Status < StandardError
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+ def initialize(message=self.class, *rest)
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+ super(AccessLog.escape(message), *rest)
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+ end
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+ class << self
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+ attr_reader :code, :reason_phrase
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+ end
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+ def code() self::class::code end
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+ def reason_phrase() self::class::reason_phrase end
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+ alias to_i code
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+ end
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class Info < Status; end
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class Success < Status; end
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class Redirect < Status; end
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@@ -68,6 +78,7 @@
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CodeToError = {}
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StatusMessage.each{|code, message|
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+ message.freeze
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var_name = message.gsub(/[ \-]/,'_').upcase
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err_name = message.gsub(/[ \-]/,'')
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@@ -79,18 +90,12 @@
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when 500...600; parent = ServerError
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end
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- eval %-
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- RC_#{var_name} = #{code}
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- class #{err_name} < #{parent}
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- def self.code() RC_#{var_name} end
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- def self.reason_phrase() StatusMessage[code] end
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- def code() self::class::code end
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- def reason_phrase() self::class::reason_phrase end
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- alias to_i code
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- end
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- -
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-
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- CodeToError[code] = const_get(err_name)
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+ const_set("RC_#{var_name}", code)
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+ err_class = Class.new(parent)
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+ err_class.instance_variable_set(:@code, code)
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+ err_class.instance_variable_set(:@reason_phrase, message)
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+ const_set(err_name, err_class)
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+ CodeToError[code] = err_class
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}
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def reason_phrase(code)
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Index: lib/webrick/httprequest.rb
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===================================================================
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--- lib/webrick/httprequest.rb (revision 26273)
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+++ lib/webrick/httprequest.rb (revision 26274)
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@@ -242,11 +242,7 @@
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@raw_header << line
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end
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end
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- begin
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- @header = HTTPUtils::parse_header(@raw_header)
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- rescue => ex
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- raise HTTPStatus::BadRequest, ex.message
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- end
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+ @header = HTTPUtils::parse_header(@raw_header.join)
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end
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def parse_uri(str, scheme="http")
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Index: lib/webrick/httpresponse.rb
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===================================================================
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--- lib/webrick/httpresponse.rb (revision 26273)
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+++ lib/webrick/httpresponse.rb (revision 26274)
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@@ -132,7 +132,7 @@
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end
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end
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- # Determin the message length (RFC2616 -- 4.4 Message Length)
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+ # Determine the message length (RFC2616 -- 4.4 Message Length)
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if @status == 304 || @status == 204 || HTTPStatus::info?(@status)
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@header.delete('content-length')
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@body = ""
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Index: lib/webrick/httputils.rb
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===================================================================
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--- lib/webrick/httputils.rb (revision 26273)
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+++ lib/webrick/httputils.rb (revision 26274)
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@@ -128,11 +128,11 @@
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when /^\s+(.*?)\s*\z/om
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value = $1
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unless field
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- raise "bad header '#{line.inspect}'."
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+ raise HTTPStatus::BadRequest, "bad header '#{line}'."
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end
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header[field][-1] << " " << value
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else
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- raise "bad header '#{line.inspect}'."
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+ raise HTTPStatus::BadRequest, "bad header '#{line}'."
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end
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}
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header.each{|key, values|
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Index: lib/webrick/accesslog.rb
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===================================================================
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--- lib/webrick/accesslog.rb (revision 26273)
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+++ lib/webrick/accesslog.rb (revision 26274)
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@@ -53,15 +53,23 @@
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when ?e, ?i, ?n, ?o
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raise AccessLogError,
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"parameter is required for \"#{spec}\"" unless param
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- params[spec][param] || "-"
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+ param = params[spec][param] ? escape(param) : "-"
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when ?t
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params[spec].strftime(param || CLF_TIME_FORMAT)
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when ?%
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"%"
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else
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- params[spec]
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+ escape(params[spec].to_s)
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end
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}
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end
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+
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+ def escape(data)
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+ if data.tainted?
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+ data.gsub(/[[:cntrl:]\\]+/) {$&.dump[1...-1]}.untaint
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+ else
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+ data
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+ end
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+ end
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end
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end
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@ -16,7 +16,7 @@
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Name: ruby
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Version: %{rubyver}%{?dotpatchlevel}
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Release: 5%{?dist}
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Release: 6%{?dist}
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License: Ruby or GPLv2
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URL: http://www.ruby-lang.org/
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BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
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@ -56,6 +56,8 @@ Patch31: ruby-1.8.6-p369-ri-gem_multipath.patch
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# Patch32 from ruby_1_8 branch
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Patch32: ruby-1.8head-irb-save-history.patch
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Patch33: ruby-1.8.6-p383-mkmf-use-shared.patch
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# Patch34 already applied in 1.8.6p388
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Patch34: ruby-1.8.6.x-CVE-2009-4492.patch
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Summary: An interpreter of object-oriented scripting language
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Group: Development/Languages
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@ -197,6 +199,7 @@ pushd %{name}-%{arcver}
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%patch31 -p1
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%patch32 -p0
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%patch33 -p1
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%patch34 -p0
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popd
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%build
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@ -572,6 +575,9 @@ rm -rf $RPM_BUILD_ROOT
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%{_emacs_sitestartdir}/ruby-mode-init.el
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%changelog
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* Wed Jan 13 2010 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 1.8.6.383-6
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- CVE-2009-4492 ruby WEBrick log escape sequence (bug 554485)
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* Wed Dec 9 2009 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 1.8.6.383-5
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- Change mkmf.rb to use LIBRUBYARG_SHARED so that have_library() works
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without libruby-static.a (bug 428384)
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