diff options
author | usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2021-07-07 10:38:10 +0000 |
---|---|---|
committer | usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2021-07-07 10:38:10 +0000 |
commit | 95ba9053e20ad8d113af37b3f1f4cbfff1f6a8f1 (patch) | |
tree | 564f37341ebbc51b3f4b0117d8a30ac0e40c8aa8 | |
parent | be5a83e84a34091f2a4e3c6dfb911b20e78e690c (diff) |
Fix StartTLS stripping vulnerability
Reported by Alexandr Savca in https://hackerone.com/reports/1178562
Co-authored-by: Shugo Maeda <shugo@ruby-lang.org>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67950 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r-- | lib/net/imap.rb | 8 | ||||
-rw-r--r-- | test/net/imap/test_imap.rb | 39 | ||||
-rw-r--r-- | version.h | 2 |
3 files changed, 47 insertions, 2 deletions
diff --git a/lib/net/imap.rb b/lib/net/imap.rb index 1c7e89ba14..91df89b79e 100644 --- a/lib/net/imap.rb +++ b/lib/net/imap.rb @@ -1215,12 +1215,14 @@ module Net end resp = @tagged_responses.delete(tag) case resp.name + when /\A(?:OK)\z/ni + return resp when /\A(?:NO)\z/ni raise NoResponseError, resp when /\A(?:BAD)\z/ni raise BadResponseError, resp else - return resp + raise UnknownResponseError, resp end end @@ -3716,6 +3718,10 @@ module Net class ByeResponseError < ResponseError end + # Error raised upon an unknown response from the server. + class UnknownResponseError < ResponseError + end + RESPONSE_ERRORS = Hash.new(ResponseError) RESPONSE_ERRORS["NO"] = NoResponseError RESPONSE_ERRORS["BAD"] = BadResponseError diff --git a/test/net/imap/test_imap.rb b/test/net/imap/test_imap.rb index 936f4e0f42..81928cb8fe 100644 --- a/test/net/imap/test_imap.rb +++ b/test/net/imap/test_imap.rb @@ -127,6 +127,24 @@ class IMAPTest < Test::Unit::TestCase imap.disconnect end end + + def test_starttls_stripping + starttls_stripping_test do |port| + imap = Net::IMAP.new("localhost", :port => port) + assert_raise(Net::IMAP::UnknownResponseError) do + imap.starttls(:ca_file => CA_FILE) + end + imap + end + end + end + + def start_server + th = Thread.new do + yield + end + @threads << th + sleep 0.1 until th.stop? end def test_unexpected_eof @@ -762,6 +780,27 @@ EOF end end + def starttls_stripping_test + server = create_tcp_server + port = server.addr[1] + start_server do + sock = server.accept + begin + sock.print("* OK test server\r\n") + sock.gets + sock.print("RUBY0001 BUG unhandled command\r\n") + ensure + sock.close + server.close + end + end + begin + imap = yield(port) + ensure + imap.disconnect if imap && !imap.disconnected? + end + end + def create_tcp_server return TCPServer.new(server_addr, 0) end @@ -1,6 +1,6 @@ #define RUBY_VERSION "2.6.8" #define RUBY_RELEASE_DATE "2021-07-07" -#define RUBY_PATCHLEVEL 204 +#define RUBY_PATCHLEVEL 205 #define RUBY_RELEASE_YEAR 2021 #define RUBY_RELEASE_MONTH 7 |