diff options
author | nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-03-28 11:49:00 +0000 |
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committer | nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-03-28 11:49:00 +0000 |
commit | dcd07242f0e7682072415b1adfe04f3ab12e0da5 (patch) | |
tree | eccb9a42eed10b557bb1ae4c7a4d9138dd54f222 /lib | |
parent | 70ad5986df7972d8f7cc5240990f2c348ae30842 (diff) |
merge revision(s) 62968:
webrick: prevent response splitting and header injection
Original patch by tenderlove (with minor style adjustments).
* lib/webrick/httpresponse.rb (send_header): call check_header
(check_header): raise on embedded CRLF in header value
* test/webrick/test_httpresponse.rb
(test_prevent_response_splitting_headers): new test
* (test_prevent_response_splitting_cookie_headers): ditto
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@63002 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib')
-rw-r--r-- | lib/webrick/httpresponse.rb | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/lib/webrick/httpresponse.rb b/lib/webrick/httpresponse.rb index ae71e20ed1..2551ead8ed 100644 --- a/lib/webrick/httpresponse.rb +++ b/lib/webrick/httpresponse.rb @@ -21,6 +21,8 @@ module WEBrick # WEBrick HTTP Servlet. class HTTPResponse + class InvalidHeader < StandardError + end ## # HTTP Response version @@ -287,14 +289,19 @@ module WEBrick data = status_line() @header.each{|key, value| tmp = key.gsub(/\bwww|^te$|\b\w/){ $&.upcase } - data << "#{tmp}: #{value}" << CRLF + data << "#{tmp}: #{check_header(value)}" << CRLF } @cookies.each{|cookie| - data << "Set-Cookie: " << cookie.to_s << CRLF + data << "Set-Cookie: " << check_header(cookie.to_s) << CRLF } data << CRLF socket.write(data) end + rescue InvalidHeader => e + @header.clear + @cookies.clear + set_error e + retry end ## @@ -357,6 +364,14 @@ module WEBrick private + def check_header(header_value) + if header_value =~ /\r\n/ + raise InvalidHeader + else + header_value + end + end + # :stopdoc: def error_body(backtrace, ex, host, port) |