ruby: CVE-2023-28756 ReDoS vulnerability in Time

Upstream-Status: Backport from https://github.com/ruby/ruby/commit/957bb7cb81995f26c671afce0ee50a5c660e540e

(From OE-Core rev: 52d26edffdd0444588ecad56b40a65e225889a01)

Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 62 insertions, 0 deletions

diff --git a/meta/recipes-devtools/ruby/ruby/CVE-2023-28756.patch b/meta/recipes-devtools/ruby/ruby/CVE-2023-28756.patch
new file mode 100644
index 0000000000..c25a147d36
--- /dev/null
+++ b/meta/recipes-devtools/ruby/ruby/CVE-2023-28756.patch
@@ -0,0 +1,61 @@
+From 957bb7cb81995f26c671afce0ee50a5c660e540e Mon Sep 17 00:00:00 2001
+From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
+Date: Wed, 29 Mar 2023 13:28:25 +0900
+Subject: [PATCH] CVE-2023-28756
+
+CVE: CVE-2023-28756
+Upstream-Status: Backport [https://github.com/ruby/ruby/commit/957bb7cb81995f26c671afce0ee50a5c660e540e]
+
+Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
+---
+ lib/time.rb       | 6 +++---
+ test/test_time.rb | 9 +++++++++
+ 2 files changed, 12 insertions(+), 3 deletions(-)
+
+diff --git a/lib/time.rb b/lib/time.rb
+index f27bacd..4a86e8e 100644
+--- a/lib/time.rb
++++ b/lib/time.rb
+@@ -501,8 +501,8 @@ class Time
+           (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s+
+           (\d{2,})\s+
+           (\d{2})\s*
+-          :\s*(\d{2})\s*
+-          (?::\s*(\d{2}))?\s+
++          :\s*(\d{2})
++          (?:\s*:\s*(\d\d))?\s+
+           ([+-]\d{4}|
+            UT|GMT|EST|EDT|CST|CDT|MST|MDT|PST|PDT|[A-IK-Z])/ix =~ date
+         # Since RFC 2822 permit comments, the regexp has no right anchor.
+@@ -717,7 +717,7 @@ class Time
+   #
+   # If self is a UTC time, Z is used as TZD.  [+-]hh:mm is used otherwise.
+   #
+-  # +fractional_digits+ specifies a number of digits to use for fractional
++  # +fraction_digits+ specifies a number of digits to use for fractional
+   # seconds.  Its default value is 0.
+   #
+   #     require 'time'
+diff --git a/test/test_time.rb b/test/test_time.rb
+index ca20788..4f11048 100644
+--- a/test/test_time.rb
++++ b/test/test_time.rb
+@@ -62,6 +62,15 @@ class TestTimeExtension < Test::Unit::TestCase # :nodoc:
+     assert_equal(true, t.utc?)
+   end
+ 
++  def test_rfc2822_nonlinear
++    pre = ->(n) {"0 Feb 00 00 :00" + " " * n}
++    assert_linear_performance([100, 500, 5000, 50_000], pre: pre) do |s|
++      assert_raise(ArgumentError) do
++        Time.rfc2822(s)
++      end
++    end
++  end
++
+   def test_encode_rfc2822
+     t = Time.utc(1)
+     assert_equal("Mon, 01 Jan 0001 00:00:00 -0000", t.rfc2822)
+-- 
+2.25.1
+
diff --git a/meta/recipes-devtools/ruby/ruby_2.7.6.bb b/meta/recipes-devtools/ruby/ruby_2.7.6.bb
index 3af321a83e..91ffde5fa3 100644
--- a/meta/recipes-devtools/ruby/ruby_2.7.6.bb
+++ b/meta/recipes-devtools/ruby/ruby_2.7.6.bb
@@ -7,6 +7,7 @@ SRC_URI += " \
            file://run-ptest \
            file://0001-Modify-shebang-of-libexec-y2racc-and-libexec-racc2y.patch \
            file://0001-template-Makefile.in-do-not-write-host-cross-cc-item.patch \
+           file://CVE-2023-28756.patch \
            "
 
 SRC_URI[md5sum] = "f972fb0cce662966bec10d5c5f32d042"