diff --git a/tacker/common/csar_utils.py b/tacker/common/csar_utils.py
index cd10a477c..5af8e68f4 100644
--- a/tacker/common/csar_utils.py
+++ b/tacker/common/csar_utils.py
@@ -521,7 +521,7 @@ def _validate_hash(algorithm, hash_code, csar, artifact_path):
 
 def extract_csar_zip_file(file_path, extract_path):
     try:
-        with zipfile.ZipFile(file_path, 'r') as zf:
+        with PreserveZipFilePermissions(file_path, 'r') as zf:
             zf.extractall(extract_path)
     except (RuntimeError, zipfile.BadZipfile) as exp:
         with excutils.save_and_reraise_exception():
@@ -573,3 +573,25 @@ def delete_csar_data(package_uuid):
         msg = _('Failed to delete csar folder: '
                 '%(csar_path)s, Error: %(exc)s')
         LOG.warning(msg, {'csar_path': csar_path, 'exc': exc_message})
+
+
+class PreserveZipFilePermissions(zipfile.ZipFile):
+    """Patched _extract_member function of zipFile.
+
+    zipfile.ZipFile.extractall function internally calls
+    _extract_member function.
+    Here _extract_member function is patched to retain the
+    file permissions using member.external_attr >> 16.
+
+    Note: First 16 bits of external_attr store permission details.
+    """
+    def _extract_member(self, member, targetpath, pwd):
+        if not isinstance(member, zipfile.ZipInfo):
+            member = self.getinfo(member)
+
+        targetpath = super()._extract_member(member, targetpath, pwd)
+
+        attr = member.external_attr >> 16
+        if attr != 0:
+            os.chmod(targetpath, attr)
+        return targetpath
diff --git a/tacker/tests/unit/common/test_csar_utils.py b/tacker/tests/unit/common/test_csar_utils.py
index 8df931e62..7255a4a1b 100644
--- a/tacker/tests/unit/common/test_csar_utils.py
+++ b/tacker/tests/unit/common/test_csar_utils.py
@@ -464,3 +464,24 @@ class TestCSARUtils(testtools.TestCase):
         self.assertEqual(flavours[0]['sw_images'][1]['min_disk'], 2000000000)
         self.assertEqual(flavours[0]['sw_images'][1]['size'], 2000000000)
         self.assertEqual(flavours[0]['sw_images'][1]['min_ram'], 8590458880)
+
+    def test_extract_csar_zip_file_for_file_permissions(self):
+        dir_location = tempfile.mkdtemp()
+        file_obj = tempfile.NamedTemporaryFile(dir=dir_location)
+        file_path = file_obj.name
+        file_name = file_path.split("/")[3]
+        os.chmod(file_path, 0o755)
+        self.addCleanup(shutil.rmtree, dir_location)
+        initial_cwd = os.getcwd()
+        os.chdir(dir_location)
+        zip_file_path = dir_location + '/' + "test_extract_csar_zip_file.zip"
+        with zipfile.ZipFile(zip_file_path, 'w') as zip:
+            zip.write(file_name)
+        self.assertEqual(True, os.path.exists(zip_file_path))
+        zip_extract_path = dir_location + "/zip_extract"
+        extract_file_path = zip_extract_path + "/" + file_name
+        os.chdir(initial_cwd)
+        csar_utils.extract_csar_zip_file(zip_file_path, zip_extract_path)
+        status = os.stat(extract_file_path)
+        permission = oct(status.st_mode)[-3:]
+        self.assertEqual('755', permission)