.. 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/2018-8007:

====================================================
CVE-2018-8007: Apache CouchDB Remote Code Execution
====================================================

:Date: 30.04.2018

:Affected: All Versions of Apache CouchDB

:Severity: Low

:Vendor: The Apache Software Foundation

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

CouchDB administrative users can configure the database server via HTTP(S). Due
to insufficient validation of administrator-supplied configuration settings via
the HTTP API, it is possible for a CouchDB administrator user to escalate their
privileges to that of the operating system's user that CouchDB runs under, by
bypassing the backlist of configuration settings that are not allowed to be
modified via the HTTP API.

This privilege escalation effectively allows a CouchDB admin user to gain
arbitrary remote code execution, bypassing
:ref:`CVE-2017-12636 <cve/2017-12636>`

Mitigation
==========

All users should upgrade to CouchDB :ref:`1.7.2 <release/1.7.2>` or
:ref:`2.1.2 <release/2.1.2>`.

Upgrades from previous 1.x and 2.x versions in the same series should be
seamless.

Users on earlier versions, or users upgrading from 1.x to 2.x should consult
with upgrade notes.

Credit
======

This issue was discovered by Francesco Oddo of `MDSec Labs`_.

.. _MDSec Labs: https://www.mdsec.co.uk/