17.10. CVE-2018-11769: Apache CouchDB Remote Code Execution

17.10.1. Description

CouchDB administrative users can configure the database server via HTTP(S). Dueto insufficient validation of administrator-supplied configuration settings viathe HTTP API, it is possible for a CouchDB administrator user to escalate theirprivileges to that of the operating system’s user under which CouchDB runs, bybypassing the blacklist of configuration settings that are not allowed to bemodified via the HTTP API.

This privilege escalation effectively allows a CouchDB admin user to gainarbitrary remote code execution, bypassing mitigations forCVE-2017-12636 and CVE-2018-8007.

17.10.2. Mitigation

All users should upgrade to CouchDB 2.2.0.

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

Users still on CouchDB 1.x should be advised that the Apache CouchDB team nolonger support 1.x.

In-place mitigation (on any 1.x release, or 2.x prior to 2.2.0) is possible byremoving the _config route from the default.ini file, as follows:

[httpd_global_handlers]
;_config = {couch_httpd_misc_handlers, handle_config_req}

or by blocking access to the /_config (1.x) or /_node/*/_config routes at a reverseproxy in front of the service.

原文: http://docs.couchdb.org/en/stable/cve/2018-11769.html