forgot to add patch...

2012-10-04 21:55:27 +09:00 · 2012-10-04 21:55:27 +09:00 · 9f5278c112
commit 9f5278c112
parent cde07425ae
1 changed files with 103 additions and 0 deletions
--- a/ruby-1.9.3-backport-from-trunk-rev37068.patch
+++ b/ruby-1.9.3-backport-from-trunk-rev37068.patch
@ -0,0 +1,103 @@
+Patch from trunk for CVE-2012-4464, CVE-2012-4466
+Part for test/ruby/test_exception.rb was adjusted for ruby 1.9.3
+
+Mamoru Tasaka <mtasaka@fedoraproject.org>
+
+------------------------------------------------------------------------
+r37068 | shugo | 2012-10-03 02:25:10 +0900 (Wed, 03 Oct 2012) | 2 lines
+
+* error.c (exc_to_s, name_err_to_s, name_err_mesg_to_str): do not
+  taint messages.
+------------------------------------------------------------------------
+Index: error.c
+===================================================================
+--- error.c	(revision 37067)
+++ error.c	(revision 37068)
+@@ -635,7 +635,6 @@
+ 
+     if (NIL_P(mesg)) return rb_class_name(CLASS_OF(exc));
+     r = rb_String(mesg);
+-    OBJ_INFECT(r, exc);
+     return r;
+ }
+ 
+@@ -996,11 +995,7 @@
+ 
+     if (NIL_P(mesg)) return rb_class_name(CLASS_OF(exc));
+     StringValue(str);
+-    if (str != mesg) {
+-	rb_iv_set(exc, "mesg", mesg = str);
+-    }
+-    OBJ_INFECT(mesg, exc);
+-    return mesg;
+    return str;
+ }
+ 
+ /*
+@@ -1131,7 +1126,6 @@
+ 	args[2] = d;
+ 	mesg = rb_f_sprintf(NAME_ERR_MESG_COUNT, args);
+     }
+-    OBJ_INFECT(mesg, obj);
+     return mesg;
+ }
+ 
+Index: test/ruby/test_exception.rb
+===================================================================
+--- test/ruby/test_exception.rb	(revision 37067)
+++ test/ruby/test_exception.rb	(modified)
+@@ -333,4 +333,54 @@
+       load(t.path)
+     end
+   end
+
+  def test_to_s_taintness_propagation
+    for exc in [Exception, NameError]
+      m = "abcdefg"
+      e = exc.new(m)
+      e.taint
+      s = e.to_s
+      assert_equal(false, m.tainted?,
+                   "#{exc}#to_s should not propagate taintness")
+      assert_equal(false, s.tainted?,
+                   "#{exc}#to_s should not propagate taintness")
+    end
+    
+    o = Object.new
+    def o.to_str
+      "foo"
+    end
+    o.taint
+    e = NameError.new(o)
+    s = e.to_s
+    assert_equal(false, s.tainted?)
+  end
+
+  def test_exception_to_s_should_not_propagate_untrustedness
+    favorite_lang = "Ruby"
+
+    for exc in [Exception, NameError]
+      assert_raise(SecurityError) do
+        lambda {
+          $SAFE = 4
+          exc.new(favorite_lang).to_s
+          favorite_lang.replace("Python")
+        }.call
+      end
+    end
+
+    assert_raise(SecurityError) do
+      lambda {
+        $SAFE = 4
+        o = Object.new
+        o.singleton_class.send(:define_method, :to_str) {
+          favorite_lang
+        }
+        NameError.new(o).to_s
+        favorite_lang.replace("Python")
+      }.call
+    end
+
+    assert_equal("Ruby", favorite_lang)
+  end
+ end