.. Licensed under the Apache License, Version 2.0 (the "License"); you may not
.. use this file except in compliance with the License. You may obtain a copy of
.. the License at
..
..   http://www.apache.org/licenses/LICENSE-2.0
..
.. Unless required by applicable law or agreed to in writing, software
.. distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
.. WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
.. License for the specific language governing permissions and limitations under
.. the License.


.. _cve/2014-2668:

==================================================================================
CVE-2014-2668: DoS (CPU and memory consumption) via the count parameter to /_uuids
==================================================================================

:Date: 26.03.2014

:Affected: Apache CouchDB releases up to and including 1.3.1, 1.4.0,
           and 1.5.0 are vulnerable.

:Severity: Moderate

:Vendor: The Apache Software Foundation

Description
===========

The :ref:`api/server/uuids` resource's `count` query parameter is able to take
unreasonable huge numeric value which leads to exhaustion of server resources
(CPU and memory) and to DoS as the result.

Mitigation
==========

Upgrade to a supported CouchDB release that includes this fix, such as:

- :ref:`1.5.1 <release/1.5.1>`
- :ref:`1.6.0 <release/1.6.0>`

All listed releases have included a specific fix to

Work-Around
===========

Disable the :ref:`api/server/uuids` handler completely, by adapting
`local.ini` and restarting CouchDB::

  [httpd_global_handlers]
  _uuids =

