1 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/security/cve_2018_8780_spec.rb b/spec/ruby/security/cve_2018_8780_spec.rb
new file mode 100644
index 0000000000..dc8c6bcc9b
--- /dev/null
+++ b/spec/ruby/security/cve_2018_8780_spec.rb
@@ -0,0 +1,43 @@
+require_relative '../spec_helper'
+
+describe "CVE-2018-8780 is resisted by" do
+  before :all do
+    @root = File.realpath(tmp(""))
+  end
+
+  it "Dir.glob by raising an exception when there is a NUL byte" do
+    -> {
+      Dir.glob([[@root, File.join(@root, "*")].join("\0")])
+    }.should.raise(ArgumentError, /(path name|string) contains null byte/)
+  end
+
+  it "Dir.entries by raising an exception when there is a NUL byte" do
+    -> {
+      Dir.entries(@root+"\0")
+    }.should.raise(ArgumentError, /(path name|string) contains null byte/)
+  end
+
+  it "Dir.foreach by raising an exception when there is a NUL byte" do
+    -> {
+      Dir.foreach(@root+"\0").to_a
+    }.should.raise(ArgumentError, /(path name|string) contains null byte/)
+  end
+
+  it "Dir.empty? by raising an exception when there is a NUL byte" do
+    -> {
+      Dir.empty?(@root+"\0")
+    }.should.raise(ArgumentError, /(path name|string) contains null byte/)
+  end
+
+  it "Dir.children by raising an exception when there is a NUL byte" do
+    -> {
+      Dir.children(@root+"\0")
+    }.should.raise(ArgumentError, /(path name|string) contains null byte/)
+  end
+
+  it "Dir.each_child by raising an exception when there is a NUL byte" do
+    -> {
+      Dir.each_child(@root+"\0").to_a
+    }.should.raise(ArgumentError, /(path name|string) contains null byte/)
+  end
+end