(#6857) Password disclosure when changing a user's password

Make the should_to_s and is_to_s functions to return a form of 'redacted'.

Rather than send the password hash to system logs in cases of failure or
running in --noop mode, just state whether it's the new or old hash. We're
already doing this with password changes that work, so this just brings it
inline with those, albeit via a slightly different pair of methods.

3 files changed, 39 insertions, 0 deletions

diff --git a/acceptance/tests/ticket_6857_password-disclosure-when-changing-a-users-password.rb b/acceptance/tests/ticket_6857_password-disclosure-when-changing-a-users-password.rb
new file mode 100644
index 000000000..f1e100c2e
--- /dev/null
+++ b/acceptance/tests/ticket_6857_password-disclosure-when-changing-a-users-password.rb
@@ -0,0 +1,23 @@
+test_name "#6857: redact password hashes when applying in noop mode"
+
+adduser_manifest = <<MANIFEST
+user { 'passwordtestuser':
+  ensure   => 'present',
+  password => 'apassword',
+}
+MANIFEST
+
+changepass_manifest = <<MANIFEST
+user { 'passwordtestuser':
+  ensure   => 'present',
+  password => 'newpassword',
+  noop     => true,
+}
+MANIFEST
+
+apply_manifest_on(agents, adduser_manifest )
+results = apply_manifest_on(agents, changepass_manifest )
+
+results.each do |result|
+  assert_match( /current_value \[old password hash redacted\], should be \[new password hash redacted\]/ , "#{result.stdout}" )
+end
diff --git a/lib/puppet/type/user.rb b/lib/puppet/type/user.rb
index f74e4266f..8d04fdc30 100755
--- a/lib/puppet/type/user.rb
+++ b/lib/puppet/type/user.rb
@@ -165,6 +165,14 @@ module Puppet
           return "changed password"
         end
       end
+
+      def is_to_s( currentvalue )
+        return '[old password hash redacted]'
+      end
+      def should_to_s( newvalue )
+        return '[new password hash redacted]'
+      end
+
     end
 
     newproperty(:password_min_age, :required_features => :manages_password_age) do
diff --git a/spec/unit/type/user_spec.rb b/spec/unit/type/user_spec.rb
index 5a84af443..594802c6e 100755
--- a/spec/unit/type/user_spec.rb
+++ b/spec/unit/type/user_spec.rb
@@ -290,6 +290,14 @@ describe user do
       @password.change_to_s("other", "mypass").should_not be_include("mypass")
     end
 
+    it "should redact the password when displaying the old value" do
+      @password.is_to_s("currentpassword").should =~ /^\[old password hash redacted\]$/
+    end
+
+    it "should redact the password when displaying the new value" do
+      @password.should_to_s("newpassword").should =~ /^\[new password hash redacted\]$/
+    end
+
     it "should fail if a ':' is included in the password" do
       lambda { @password.should = "some:thing" }.should raise_error(Puppet::Error)
     end