[OE-core] [PATCH] ruby: fix CVE-2019-16254

Alexander Kanavin alex.kanavin at gmail.com
Tue Feb 11 13:16:15 UTC 2020


Yes. You should always specify the target branch in the subject if it is
not for master.

Alex

On Tue, 11 Feb 2020 at 14:06, rahul chauhan <rahulchauhankitps at gmail.com>
wrote:

> Hi community members,
>
> This patch Fixes CVE-2019-16254 on zeus branch.
> patch test failed, since I did not use --subject-prefix="zeus][PATCH" at
> the time of patch submission to openembedded-core at lists.openembedded.org.
>
> should i resubmit this patch with --subject-prefix="zeus][PATCH"
> or
> can anyone guide me what should do next in  this situation ?
>
> Thanks & Regards
> Rahul Chauhan
>
> On Mon, Feb 10, 2020 at 11:47 PM Rahul Chauhan <
> rahulchauhankitps at gmail.com> wrote:
>
>> Signed-off-by: Rahul Chauhan <rahulchauhankitps at gmail.com>
>> ---
>>  .../ruby/ruby/fix-CVE-2019-16254.patch             | 106
>> +++++++++++++++++++++
>>  meta/recipes-devtools/ruby/ruby_2.5.5.bb           |   1 +
>>  2 files changed, 107 insertions(+)
>>  create mode 100644
>> meta/recipes-devtools/ruby/ruby/fix-CVE-2019-16254.patch
>>
>> diff --git a/meta/recipes-devtools/ruby/ruby/fix-CVE-2019-16254.patch
>> b/meta/recipes-devtools/ruby/ruby/fix-CVE-2019-16254.patch
>> new file mode 100644
>> index 0000000..704c850
>> --- /dev/null
>> +++ b/meta/recipes-devtools/ruby/ruby/fix-CVE-2019-16254.patch
>> @@ -0,0 +1,106 @@
>> +From 18d5289b4579822e391b3f5c16541e6552e9f06c Mon Sep 17 00:00:00 2001
>> +From: Yusuke Endoh <mame at ruby-lang.org>
>> +Date: Tue, 1 Oct 2019 12:29:18 +0900
>> +Subject: [PATCH] WEBrick: prevent response splitting and header injection
>> +
>> +This is a follow up to d9d4a28f1cdd05a0e8dabb36d747d40bbcc30f16.
>> +The commit prevented CRLR, but did not address an isolated CR or an
>> +isolated LF.
>> +
>> +Upstream-Status: Backport
>> https://github.com/ruby/ruby/commit/3ce238b5f9795581eb84114dcfbdf4aa086bfecc
>> +CVE: CVE-2019-16254
>> +
>> +Co-Authored-By: NARUSE, Yui <naruse at airemix.jp>
>> +Signed-off-by: Rahul Chauhan <rahulchauhankitps at gmail.com>
>> +---
>> + lib/webrick/httpresponse.rb       |  3 ++-
>> + test/webrick/test_httpresponse.rb | 46
>> +++++++++++++++++++++++++++++++++++++--
>> + 2 files changed, 46 insertions(+), 3 deletions(-)
>> +
>> +diff --git a/lib/webrick/httpresponse.rb b/lib/webrick/httpresponse.rb
>> +index 6d77692..d26324c 100644
>> +--- a/lib/webrick/httpresponse.rb
>> ++++ b/lib/webrick/httpresponse.rb
>> +@@ -367,7 +367,8 @@ def set_error(ex, backtrace=false)
>> +     private
>> +
>> +     def check_header(header_value)
>> +-      if header_value =~ /\r\n/
>> ++      header_value = header_value.to_s
>> ++      if /[\r\n]/ =~ header_value
>> +         raise InvalidHeader
>> +       else
>> +         header_value
>> +diff --git a/test/webrick/test_httpresponse.rb
>> b/test/webrick/test_httpresponse.rb
>> +index 6263e0a..24a6968 100644
>> +--- a/test/webrick/test_httpresponse.rb
>> ++++ b/test/webrick/test_httpresponse.rb
>> +@@ -29,7 +29,7 @@ def setup
>> +       @res.keep_alive  = true
>> +     end
>> +
>> +-    def test_prevent_response_splitting_headers
>> ++    def test_prevent_response_splitting_headers_crlf
>> +       res['X-header'] = "malicious\r\nCookie: hack"
>> +       io = StringIO.new
>> +       res.send_response io
>> +@@ -39,7 +39,7 @@ def test_prevent_response_splitting_headers
>> +       refute_match 'hack', io.string
>> +     end
>> +
>> +-    def test_prevent_response_splitting_cookie_headers
>> ++    def test_prevent_response_splitting_cookie_headers_crlf
>> +       user_input = "malicious\r\nCookie: hack"
>> +       res.cookies << WEBrick::Cookie.new('author', user_input)
>> +       io = StringIO.new
>> +@@ -50,6 +50,48 @@ def test_prevent_response_splitting_cookie_headers
>> +       refute_match 'hack', io.string
>> +     end
>> +
>> ++    def test_prevent_response_splitting_headers_cr
>> ++      res['X-header'] = "malicious\rCookie: hack"
>> ++      io = StringIO.new
>> ++      res.send_response io
>> ++      io.rewind
>> ++      res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
>> ++      assert_equal '500', res.code
>> ++      refute_match 'hack', io.string
>> ++    end
>> ++
>> ++    def test_prevent_response_splitting_cookie_headers_cr
>> ++      user_input = "malicious\rCookie: hack"
>> ++      res.cookies << WEBrick::Cookie.new('author', user_input)
>> ++      io = StringIO.new
>> ++      res.send_response io
>> ++      io.rewind
>> ++      res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
>> ++      assert_equal '500', res.code
>> ++      refute_match 'hack', io.string
>> ++    end
>> ++
>> ++    def test_prevent_response_splitting_headers_lf
>> ++      res['X-header'] = "malicious\nCookie: hack"
>> ++      io = StringIO.new
>> ++      res.send_response io
>> ++      io.rewind
>> ++      res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
>> ++      assert_equal '500', res.code
>> ++      refute_match 'hack', io.string
>> ++    end
>> ++
>> ++    def test_prevent_response_splitting_cookie_headers_lf
>> ++      user_input = "malicious\nCookie: hack"
>> ++      res.cookies << WEBrick::Cookie.new('author', user_input)
>> ++      io = StringIO.new
>> ++      res.send_response io
>> ++      io.rewind
>> ++      res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io))
>> ++      assert_equal '500', res.code
>> ++      refute_match 'hack', io.string
>> ++    end
>> ++
>> +     def test_304_does_not_log_warning
>> +       res.status      = 304
>> +       res.setup_header
>> +--
>> +2.7.4
>> diff --git a/meta/recipes-devtools/ruby/ruby_2.5.5.bb
>> b/meta/recipes-devtools/ruby/ruby_2.5.5.bb
>> index 223b037..58bb97f 100644
>> --- a/meta/recipes-devtools/ruby/ruby_2.5.5.bb
>> +++ b/meta/recipes-devtools/ruby/ruby_2.5.5.bb
>> @@ -3,6 +3,7 @@ require ruby.inc
>>  SRC_URI += " \
>>
>> file://0001-configure.ac-check-finite-isinf-isnan-as-macros-firs.patch \
>>             file://run-ptest \
>> +           file://fix-CVE-2019-16254.patch \
>>             "
>>
>>  SRC_URI[md5sum] = "7e156fb526b8f4bb1b30a3dd8a7ce400"
>> --
>> 2.7.4
>>
>> --
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